Statistics and Probability questions and answers in March 2023 — Page 3

Archeologists have studied sizes of Egyptian skulls in an attempt to determine whether breeding occurred between different cultures. Listed below are the widths (mm) of skulls from 150 A.D. Construct ...
In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy field. She flipped a coin to select either her right ha...
Read the following article Note:  https://scholar.lib.vt.edu/ejournals/JITE/v47n1/denson.html   a) What type of statistical procedure was used to answer research questions one, two and three? b) Wha...
Help Thank you. Assume that a simple random sample has been selected from a normally distributed population and test the given claim. Identify the null and alternative hypotheses, test statistic, P-va...
If we want to predict ice cream sales using temperature and month of the year, we would need to:   this means make an interaction term in our data set   this means make 12 dummy variables in our dat...
Smith is a weld inspector at a shipyard. He knows from keeping track of good and substandard welds that for the afternoon shift, 5% of all welds done will be substandard. If Smith checks 300 of the 75...
  (7 pts) Suppose my friend was able to get exactly 3 wine and cheese pairings correct. If the null hypothesis is true, what is the probability that the participant would match exactly 3 wines with t...
Assuming our alpha level is 5% what is the probability that we have committed a Type I error? Assuming our alpha level is 5%, could we have committed a Type II error?    Can an amateur wine lover pa...
Question A spinner contains the numbers 1 through 70. What is the probability that the spinner will land on a number that is not a multiple of 12? . Give your answer in fraction form. Provide your ans...
 . . Captain Jack Sparrow is stranded on a deserted island. Ships appear on the horizon according to a Poisson process with a rate of 1 = 5 per day (midnight to midnight). 1. What is the probability ...
Can you help me with both 9.12 and the second question? I'm trying to understand where to go from there. Any help would be appreciated.  . 9.12 Independent random samples selected from two normal pop...
Hello! I need some serious help with completing an R assignment. . 19. Comment on the difference between stacking and facetingr graphs. 20. Perform a chi squared test for association. Use the W[W com...
e) (4 pts) What were your results (p-value calculation), include the details about how many runs of the simulation, what you isolated and any math that you did To test this, I had 150 individuals take...
Davenport University claims to accept 63% of applicants. In a random sample of 1,000 Davenport University applicants, 602 were accepted. Calculate the 95% confidence interval and evaluate whether Dave...
A soccer player made 67% of her goal attempts last season. The coach wants to estimate the number of goals the player will make out of 10 attempts in a game and decides to run a simulation. Which of t...
1. A sports reporter conducts a study of the fans' overall satisfaction with the sporting event after the event is completed. He surveys 154 randomly selected fans on their way out of the event and as...
 . A genetic experiment involving peas yielded one sample of offspring consisting of 426 green peas and 152 yellow peas. Use a 0.05 significance level to test the claim that under the same circumstan...
can this be used as a t-test as well: To determine whether a new sleeping pill has an affect that varies with dosage, a researcher randomly assigns adult insomniacs, in equal numbers, to receive eithe...
A clinical trial is performed to test a new drug designed to lower blood sodium levels. One hundred fifty participants are randomly assigned to take the new drug, and 150 participants are randomly ass...
 . For question 2, use the information provided to complete the table below. 2 points The following table presents the results from an independent samples one-way ANOVA comparing three treatment cond...
Can you check my work and tell me if this is right?   . Excel File Edit View Insert Format Tools Data Window Help Q Tue Mar 28 9:07 PM a n AutoSave . OFF Q OP Home Insert Draw Page Layout Formulas D...
WK2 Discussion Board OSH 110 Week 2 Discussion Board Video Instructions Discussion Topic List 5 traits of a good safety leader which would make you want to follow them and create a work environment wh...
Random results for you to ponder...do the results justify the conclusions? Why or why not?  sentences   Q1. As ice cream sales increase, so do drowning deaths. Thus, ice cream causes people to drown...
 . 1. [-/12 Points] DETAILS DEVORESTAT9 5.1.001.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A service station has both self-service and full-service islands. On each island, there is a single regu...
 . Following is the payoff table for the Pittsburgh Development Corporation (PDC) Condominium Project. Amounts are in millions of dollars. State of Nature Decision Alternative Strong Demand S1 Weak D...
 . Question 1 1 pts A null hypothesis is rejected with a level of significance of 0.05. Is it also rejected with a level of significance of 0.10? Explain your reasoning. O No, the claim would not b...
Rating Sequel Budget Opening Theaters USRevenue Scores Minutes PG-13 0 160 62.79 3792 292.6 8.8 148 PG-13 0 8 17.73 2856 58.4 7.2 92 PG 0 150 16.35 3169 131.6 4.4 103 PG-13 0 60 10.61 2818 31.5 7.5 11...
The duration of pregnancy in a particular human population (in a district of South India) is approximately Normally distributed with μ = 274.3 days and σ = 8.9 days. In the following questions, assu...
Question 11 of 14 > An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was x = 119.6 ounces. Suppose the standard deviation is known to be...
You are given the sample mean and the sample standard deviation. Assume the population is normally distributed and use the t-distribution to find the margin of error and construct a 95% confidence int...
Please solve using Excel and explain. An analyst at a local bank wonders if the age distribution of customers coming for service at his branch in town is the same as at a branch located near the mall....
mitting an external tool Question A deck of cards contains RED cards numbered 1, 2, 3, 4,5 and BLUE cards numbered 1, 2, 3, 4, 5, 6. Let R be the event of drawing a red card, B the event of drawing a ...
SAMPLES AND POPULATION:  If you want to do a survey to find out students favorite color what would you ask and why?   Closure: Give a time in which you would use a sample instead of a population? Po...
<Question 7 of 21 > Attempt 6 In its Fuel Economy Guide for 2016 model vehicles, the Environmental Protection Agency gives data on 1170 vehicles. There are a number of high outliers, mainly hybr...
Task 2: ANOVA Single factor analysis using excel ONLY  (2.5 pts) Data source: ANOVA Excel (given) The data contain three sales categories' weekly revenue ( Delivery, Onsite, and take-out), the manage...
Business-to-business sales are a huge fraction of the economy of every country. As a​ result, there is a whole industry dedicated to tracking the market share of business products and services. Comp...
An article reported the national market share of leading sellers of carbonated soft drinks. The pie chart and bar chart below display the values.​a) Which is better for displaying the relative porti...
Could you pls write it down?. 4. (Constrained linear regression) Consider the linear regression model Y = X3* + E, where Y E R", X E Roxd, 3* is in a closed convex set K C Rd, and & ~ N(0, o2...
The table shows the number of vehicles involved in 400 accidents during a given week in a large city and whether or not alcohol was involved in the accident.  If a random accident is chosen, find the...
 . Increased blood vessel formulation is a predictive factor in survival for a certain disease. One treatment is stem cell transplantation with the patient's own stem cells. The accompanying data tab...
What factors can affect the width of a confidence interval, if the mean and standard deviation remain the same?  (Think about the formulas).   In what way does each factor affect the width?  (i.e. ...
When manufacturing cars, it is possible for faulty to occur which mean some cars do not get sold. 5000 units of a particular car are set to be produced at a certain dealer where the rate of incidence ...
The size of fish is very important to commercial fishing. A study conducted in 2012 found the length of Atlantic cod caught in nets in Karlskrona to have a mean of 49.9 cm and a standard deviation of ...
You have changed your return and refund policy to reduce fraudulent returns.  You believe that this has reduced the average amount of returns from the previous average of $120 per return.  To evalua...
Asap nochatgpt. In a sample of 1000 randomly selected consumers who had opportunities to send in a rebate claim form after purchasing a product, 450 of these people said they never did so. Reasons cit...
Estimate the simple correlation between 'visits' and 'weather'. Pearson correlation cofficient is (use three decimal points, again no zero before decimal) . In testing the null hypothesis (H0) of ther...
 . 2. 4.114 The Ignorance Survey: United Kingdom. Exercise 4.113 refers to a survey used to assess the ignorance of the public to global population trends. A similar survey was conducted in the Unite...
A 2021 study found that 60% of teenagers use Tik-Tok every week. Researchers are interested in whether or not Tik-Tok usage among teens has changed significantly in 2022. In a randomly chosen sample o...
Researchers interested in forensic and cognitive psychology were investigating whether the age of their participants could predict how many details of a crime they could recall. Furthermore, with this...
 . Due to imprecision of the manufacturing process, lengths of metal sections for assembling a fence are not constant, but normally distributed with the mean 40 in, and the variance of 0.16 in2. 3. C...
Please help             Negative z Scores           Standard Normal (z) Distribution: Cumulative Area from the Left           z .00 .01  .02 .03 .04 .05 .06 .07 .08 .09 negative 3.50...
Based on the definitions of prediction interval and confidence interval, what happens to these intervals as the sample size increases? Answer may more than one.  a . Confidence intervals remain rough...
Please help, all data is attached. I don't need long explanations. Thank you            Negative z Scores           Standard Normal (z) Distribution: Cumulative Area from the Left      ...
c. Does exposure to lead appear to have an effect on IQ​ scores? ▼ No / Yes because the confidence interval contains ▼ only positive values / zero / only negative values.      . The IQ scores...
Can anyone help explain these results? A one-sample t-test was used. Thank you!  . Statistical Hypothesis Ho: H = 350 mm H1: u < 350 mm. Q-Q Plot of Wing Length 300 Results Wing Length 100 Variabl...
 . The accompanying data are the weights (kg) of poplar trees that were obtained from trees planted in a rich and moist region. The trees were given different treatments identified in the accompanyin...
a. This is a ▼ two-tailed / right-tailed / left-tailed test.. The test statistic of z = 2.32 is obtained when testing the claim that p # 0.145. a. Identify the hypothesis test as being two-tailed, l...
 . Use the Shapiro Library and identify a primary source, peer-reviewed public health or medical journal article that used any of the statistical methodologies covered in this class to analyze their ...
 . 1. (6 points total, 2 points each) Let X be a continuous random variable with expected value E(X) = : and the probability density function -ec for r 2 0 f(x) = O otherwise. for constants a > 0 ...
 . X arts a through d below. Hospital Stay Data he icon to view the table of hospital stay data. Costs ($) Age Days ICU 1,431 18 he number of days in the ICU. t a regression model using all three ind...
A small hair salon in Denver, Colorado, averages about 55 customers on weekdays with a standard deviation of 9. It is safe to assume that the underlying distribution is normal. In an attempt to increa...
What is the critical value (for a t-test) for a sample of 1,000 using a p-value of .05 and a two-tailed test? If you saw this reported in an article... t(4) = 2.87, p = .032,  ...what does each part ...
[A-Q1] Farmer Bob runs a pig farm and currently has as many male pigs as female pigs.  Farmer Sue decides to buy two pigs from Bob and sends her son to pick them up, who just randomly grabs two pigs ...
In a study to determine the effect of drug use by pregnant mothers on infant weight at a later stage of their lives two samples were selected, (A) for users of the drug and (B) for non-users. Each sam...
The joint probability distribution of the number X of cars and the number Y of buses per signal cycle at a proposed left-turn lane is displayed in the accompanying joint probability table.   y p ( x ...
Asap. Use the given information to find the number of degrees of freedom, the critical values x1 and X , and the confidence interval estimate of o. It is reasonable to assume that a simple random samp...
The cutoff for defining a large correlation is 0.2.   True   False   Correlation and covariance measure the   strength and direction of a linear relationship between two numerical variables.   st...
1. Find the linear correlation coefficient. What does this tell you about your data? 2. Write the equation of the regression line and use it to predict the shoe size of a person that is 68 inches tall...
 . 2. You work in quality control for C&H Sugar. The amount of sugar put into ten-kg bags is normally distributed with a mean weight of 10.4 kg and a standard deviation of 0.24 kg. To check that ...
Jacob draws a card from a well-shuffled standard deck of 52 playing cards. Then he draws another card from the deck without replacing the first card. Determine the probability that both cards are spad...
You measure the dependent variable of participants' relaxation level as a function of whether they meditate before being tested, and whether they were shown a film containing a low, medium, or high am...
ANSWER THE QUESTION, NO NEED FOR EXPLANATION. Question 31 6 pts 1. Local anglers often protest that the waters around Southern California have been overfished, and there are not enough fish anymore. A...
 . 1. It is known that typing speed is normally distributed, with an average of u=33 words per minute (wpm) and a standard deviation of U=12 wpm. (a) To become a professional typist, you need to type...
 . The following information is available for two samples selected from independent normally distributed populations. Complete parts (a) and (b). Population A: n = 21 32 = 58.9 Population B: n = 13 3...
]When we check on how Political Affiliation ("Affil") is distributed in Florida, we find: 34.0% Democrat, 29.5% Independent, 36.5% Republican (as of 2022).     a) Are the students in our Student Sur...
Use the "Diabetes" data on StatCrunch to answer this problem.   https://www.statcrunch.com/app/index.php?dataid=3666301Links to an external site.   About this data:  These data are courtesy of Dr J...
Please answer correctly answer a-h. IMMEDIATE ACTIVITY PREDECESSORS E m 4 m N m na 4 m N CO C. D LL m a) Calculate the expected time and variance for each activity. b) Based on the calculation of esti...
In the first two problems, we want to examine whether a transformed variable can produce better regression results based on OLS assumptions and requirements.    Open the wage1.dta dataset using the ...
I need help with these few questions . You are a researcher whose best friend believes that when he makes a wish it really comes true. As a scientist, you are not so sure about his claim, and you off...
Solve this question using RStudio. 5. In a large population of likely voters, the proportion of voters who plan to vote for candidate A is p = 0.52. In a random sample of 600 likely voters, what is th...
 . The class standing of two sociology classes is reported below: Class A Class B Class Standing Frequency Frequency Freshman 8 Sophomore 10 Junior 7 Senior 6 10 n-18 n-35 Which class is the most het...
I need help with completing parts a through e please. Save Use the results from a survey of a simple random sample of 1255 adults. Among the 1255 respondents, 81% rated themselves as above average dri...
 . The population mean and standard deviation are given below. Find the required probability and determine whether the given sample mean would be considered unusual. For a sample of n = 63, find the ...
 . A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1467 and the standard deviation was 312. The test scores of four students selected at random are 18...
Following are percentages for annual sales growth and net sales attributed to loyalty card usage at 74 Noodles & Company restaurants.  (a) Make a scatter plot.  (b) Find the correlation coeffici...
1. If $3,000 is invested in an account for 25 years. Calculate the total interest earned at the end of 25 years if the interest is: (A) 5% compounded annually: $: (B) 5% compounded quarterly: $: (C) 5...
Hi, I have a dataset with 1 dependent variable (Satisfaction Rating: this is a continuous variable), and 20 predictors in total. I need to assess which predictors have potential impact on Satisfaction...
I need help with these three questions . Convert the exponential equations into logarithmic form: (a) 53 = 125 is equivalent to log, C = D. C : and D (b) 216 = 6 is equivalent to log: E = F. E = and ...
Please help with part b. Treatment Placebo A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random s...
To test this, I had 150 individuals take a personality inventory that gave a summary of their personality. I then matched each of these summaries with the season that I felt was best aligned with that...
You may need to use the appropriate appendix table or technology to answer this question. Barron's reported that the average number of weeks an individual is unemployed is 18.5 weeks. Assume that for ...
 . Fifty-four wild bears were anesthetized_ and then their weights and chest sizes were measured and listed in a data set Results are shown in the accompanying display Is there sufiicient evidence t...
You may need to use the appropriate appendix table or technology to answer this question.In 2017, a website reported that only 10% of surplus food is being recovered in the food-service and restaurant...
You may need to use the appropriate appendix table or technology to answer this question. Barron's reported that the average number of weeks an individual is unemployed is 18.5 weeks. Assume that for ...
 . QUESTION 5 (10 MARKS) Samples of plastic product were selected from a batch of material, and the tensile strength in kg was measured for three different time durations, with the following results....
Part A:   1.     2.   Part B: 1.   2. 3.   4.   5. 6. 7.  . For the scenario below, identify: a. the population, b. the sample, c. the parameter, d. the statistic. e. the rn variable, and f. t...
 . Question 3 (1.5 points) The complement of the set A is O1) A-B O 21 A-U O3) B-A O 4) U - A Question 4 (1.5 points) The intersection of the sets {1, 2. 5) and (1, 2. 0) is the set O 1) (2. 5 } 2) (...
 . Problem 3 We model a waiting line with customers that arrive independently at rate o at a single server, with the service times being independent exponential random variables with the same paramet...
 . Problem 1 A monkey climbs a ladder with n bars, so they jump to the next bar at rate A but fall at the bottom of the ladder independently at rate p. Once at the top, the monkey can only fall with ...
Based on the statistical tests in this course, this assignment requires you to write a description of a potential research project using the following scenario.   Scenario: Imagine you are a Math Com...
 . Sleeping outlier: A simple random sample of nine college freshmen were asked how many hours of sleep they typically got per night. The results were 8.5 6.5 8 9 6 7.5 24 8.5 9.5 Send data to Excel ...
 . Question 6 (1.9 points) I have a bag with 12 red marbles, 14 blue marbles and 4 green marbles. Drawing (how many in a row) straight red marbles (with replacement) is less likely than drawing one g...
Please employ appropriate SAS procedures to produce descriptive statistics and p-values that would allow you to fill in the table below.  Use the Dataset Assign6_SP2022.   Checking distribution of ...
 . 1. A CI is desired for the true average stray-load loss / (watts) for a certain type of induction motor when the line current is held at 10 amps for a speed of 1500 rpm. Assume that stray-load los...
Someone please help me with this question. A university dean is interested in determining the proportion p of students who receive some sort of financial aid, Rather than examine the records for all s...
Someone please help with each question . DON'T BET ON IT Gambling and point-shaving is a long-running, chronic problem in college sports, particularly basketball. The National Collegiate Athletic Ass...
 . Arsenic in Chicken A restaurant chain is measuring the levels of arsenic in chicken from its suppliers. The question is whether there is evidence that the mean level of arsenic is greater than 80 ...
 . 5 - Two hazardous environment facilities are being evaluated, with the projected life of each facility being 10 years. The cash flows are as follows: Alt. A Alt. B First cost $615,000 $300,000 Mai...
For a research study measuring the effect of two treatments, the sample sizes are n = 8 in one treatment and n = 10 in the other treatment, and the pooled variance is 1.23. The sample means are M = 21...
Scores on a standardized test form a normal distribution with µ = 300 with σ = 100. a. What percentage of scores lie above X = 345? b. What percentage of scores lie are below X= 375? c. What percent...
Find Figure 2(d). Give approximate values for the mean and standard error of the mean for each of the two groups. State whether "mean" here refers to the sample mean or to the true mean.  . p = 0.17 ...
Date Art NYSE 1/17/2022 9.67 16397.34 1/24/2022 8.58 16397.86 1/31/2022 8.93 16701.58 2/7/2022 9.03 16664.99 2/14/2022 9.12 16392.32 2/21/2022 8.04 16427.96 2/28/2022 7.34 16129.66 3/7/2022 7.13 15753...
   . 23 sydney schaeffer 03/27/23 8:50 PM Question 8 of 9 > This test: 50 point(s) possible Submit test This question: 13 point(s) possible An amusement park is considering charging $14 for admis...
   . Speedy-Go, Inc., produces custom-built engines for automobile race teams. The most recent project undertaken by Speedy-Go requires 14 different activities. Speedy-Go's sponsor would like to det...
A poll was taken of 14,078 working adults aged 40-70 to determine their level of education. The participants were classified by generation and by level of education. The results are shown below.   Ed...
Describe is probability in your own words. How does probability relate to symmetrical outcomes and relative frequencies ? Lastly, what does it mean that probability can be subjective?  Provide exampl...
You are a consultant for a shipping company. One of their clients needs an open-topped box with a square base, that has a volume of 4000 in^3. Find the dimensions of the box that has the minimum surfa...
 . x g 2023 sydney schaeffer 03/27/23 8:37 PM @ < Question 4 of 9 > This test: 50 point(s) possible This question: 2 point(s) possible Submit test A brewery has a steady annual demand for 33,32...
Given the following, which of the following are true (check all that apply): Analysis of Variance Source DF Sum of Squares Mean Square F Ratio Model 1 11.65832 11.6583 6.9686 Error 111 185.69994 1.673...
 . Problem 1. [20 points] Let X1, X2 be i.i.d. N(#, 1) random variables with unknown parameter / E R. 1. [5 points] Let W = 2X1 + X2. Find the Fisher information Iw(). Is W a sufficient statistic for...
Please answer a) and c). Exercises 8.83 and 10.73 presented some data collected in a 1993 study by Susan Beckham and her colleagues. In this study, measurements of anterior compartment pressure (in mi...
 . A. Splines Get the data for Study 2 of Ehrlinger et al (2016) as follows: dat = read. csv("http: //dept. stat.Isa. umich. edu/~bbh/s485/data/emd16study2.csv") Model EstPerc, or I (EstPer...
May look confusing but it is all ONE problem split into parts. I provided pictures of drop-down answer options for the parts that require them along with the answers, so that's why it may look like a ...
One evolutionary theory hypothesizes that people will not follow a 24-hour cycle of sleeping and waking if they are not exposed to sunlight. To test this notion, 8 paid volunteers were placed (individ...
De los siguientes datos para organizar determina la cantidad de clases K, el ancho de la muestra W: 3 7 4 2 8 3 5 4 9 10 2 40 2 18 0 20 41 19 22 25 1 8 7 6 25 6 7 8 9 7 4 6 7 8 7   Grupo de opciones ...
Scores on a standardized test form a normal distribution with µ = 300 with σ = 100. a. What percentage of scores lie below X = 346? b. What percentage of scores lie are higher than X= 450? c. What p...
A car manufacturer believes electric cars will result in greater yearly savings for customers. His company designed an electric model version of their best-selling SUV and wants to compare the mainten...
 . Electrical Stimulation for Fresh Insight? We introduce a study in which 40 participants are trained to solve problems in a certain way and then asked to solve an unfamiliar problem that requires f...
 . 5 Cincinnati Paint Company sells quality brands of paints through hardware stores throughout the United States. The company maintains a large sales force who call on existing customers and look fo...
How to solve. Ivanna borrowed money from an online lending company to invest in antiques. She took out a personal, amortized loan for $25,500, at an interest rate of 7.85%, with monthly payments for a...
SoilCompress.csv comp  pent  Compressed 2.86 Compressed 2.68 Compressed 2.92 Compressed 2.82 Compressed 2.76 Compressed 2.81 Compressed 2.78 Compressed 3.08 Compressed 2.94 Compressed 2.86 Compresse...
 . first second I was hoping (had hypothesized) that folks would do better on the second APA style homework assignment assignment assignment than on the first. To check on this I counted the number o...
 . Wrist Band Control Dr. Klaster claims to have developed a way to improve college student's attention span during boring lectures. The wrist band includes a galvanic skin electrode that measures de...
Math M118 Written Quiz 10 Name For each question, give an exact answer or give at least 4 decimal places. Score out of 12 Show your work. 1. Using the standard normal table, Find Pr[—0.93 5 Z S 1.37...
Find t p value and critical values. Save Part 1 of 3 O Points: 0 of 1 The null hypothesis is Ho: H1 = H2 and the alternative hypothesis is as specified. The provided data are from a simple random pair...
   . A hospital would like to develop a regression model to predict the total hospital bill for a patient based on his or her length of stay, number ot days in the hospital's intensive care unit (IC...
Four people toss their hats into a box, then the hats are distributed back in random order.  Let X be 1 if person 2 gets their own hat, 0 otherwise.  Let Y be 1 if person 3 gets their own hat, 0 oth...
A/B testing is a testing method that businesses use to test different designs and formats of a web page to determine whether a new web page is more effective than a current web page. Web designers at ...
 . Ages Number of students 15-18 2 19-22 8 23-26 8 27-30 10 31-34 6 35-38 10 Based on the frequency distribution above, find the relative frequency for the class with a lower class limit of 27 Give y...
 . e the problem. 52) Lonnie needs extra money to buy a truck to start up a delivery service. He takes out a simple 52) interest loan for $6000.00 for 7 months at a rate of 7.25% . How much interest ...
Points: 0 of 1 Save K A/B testing is a testing method that businesses use to test different designs and formats of a web page to determine whether a new web page is more effective than a current web p...
 . Consider the following time series data. Quarter Year 1 Year 2 Year 3 3 5 6 2 2 5 3 4 6 7 4 6 8 9 (a) Construct a time series plot. What type of pattern exists in the data? O The time series plot ...
 . Kelson Sporting Equipment, Inc., makes two different types of baseball gloves: a regular model and a catcher's model. The firm has 875 hours of production time available in its cutting and sewing ...
 . Blair & Rosen, Inc. (B&R), is a brokerage firm that specializes in investment portfolios designed to meet the specific risk tolerances of its clients. A client who contacted B&R this p...
A/B testing is a testing method that businesses use to test different designs and formats of a web page to determine whether a new web page is more effective than a current web page. Web designers at ...
Show work for each please!. 2. Find Z for the following confidence levels a. 90% b. 95% c. 99% d. 86% 3. Consider a normally distributed population with a standard deviation of 36. If a random sample ...
Solve for the probabilities of the following binomial distribution problems using either the binomial formula or binomial distribution table as appropriate. a. If n = 9 and p = .35, what is the probab...
Need help with my homework please. Missing data of question 31. eek 2 Question 31, 3.3.33-T HW Score: 0%, 0 of 31 points Part 1 of 3 Points: 0 of 1 Save Use the same scales to construct boxplots for t...
 . Consider the following set of ordered pairs. Complete parts a through c. 2 5 3 3 6 a. Calculate the slope and y-intercept for these data. y = 1.6857 + (1.1143)x (Round to four decimal places as ne...
   . The accompanying data have a sample correlation coefficient, rounded to three decimal places, of - 0.808. Perform a hypothesis test with the data to determine if the population correlation coef...
Mrs Vomit-Bucket-Mop wants to know if her family consumes more bees than the national average.  She therefore counts how many bees all of her family members consume and she wants to compare her avera...
 . Answer each question to the best of your ability. Show your calculations (they can be verified on a calculator). Your final answer should be in the form of a complete sentence. A random sample of ...
9-1 Is the transportation model an example of decision making with certainty or decision making with uncertainty? Because?   9-3 What is a balanced transportation problem? Describe the approach you w...
 . The accompanying data have a sample correlation coefficient, rounded to three decimal places, of -0.808. Perform a hypothesis test with the data to determine if the population correlation coeffici...
 . Organizers of a fishing tournament believe that the lake holds a sizable population of largemouth bass. They assume that the weight of largemouth bass follows a right- skewed model with mean 3.5 l...
 . LON-CAPA Question4.problem X Course Hero X + - C capa.mathstat.dal.ca/res/mathstatdal/lihui/2016Fall_STAT1060/A9/Question4.problem#mean%20yield A chemical engineer is investigating the effect of p...
 . Consider the following set of dependent and independent variables. Using technology, check for the presence of multicollinearity. If multicollinearity is present, take the necessary steps to elimi...
 . Rohan noticed that a large number of Penn students went to Europe for spring break. Consider a graph where the vertices are Penn students in Europe and 2 vertices are linked by an edge if those 2 ...
You created a scatterplot of miles per gallon against weight; check to make sure it was included in your attachment. Does the graph show any trend? If yes, is the trend what you expected? Why or why n...
A study for each of 40 countries of the world found that there is a strong positive correlation (R2 = 62.9%) between the Life expectancy --average of men and women, in years-- (response variable) and ...
Steps would help a lot, thanks. The probability density Function (PDF) For the mortality of a jellyfish at age x is given by: PLM= K er oél<°° H30 a. Find the value of the constant k, so that p...
In conceptual terms, the hypothesis is that depression will be lower after treatment. State this hypothesis in statistical terms and include the correct notation. Explain why the t-test for dependent ...
BodyFat 9.71 7.53 6.78 8.32 42.89 35.03 7.47 7.08 7.59 14.08 4.55 10.51 11.25 20.72 19.31 7.27 10.6 14.9 4.52 9.19 12.73 14.65 33.87 9.49 10.65 8.97 30.51 7.58 4.85 25.4 32.71 33.71 6.15 10.3 18.96 17...
Hogwarts school of witchcraft and wizardry needs your help. The headmaster has been collecting data from the surrounding villages. He believes that the number of times witches and wizards say the name...
nufacturer's training shoes. The vertical jump heights of eight randomly selected athletes are measured. After the athletes have used the shoes for 10 months, their vertical jump heights are measured ...
Age Distribution in New Jersey, 2019             (age) class lower limit (age) class upper limit frequency, f (# people) class midpoint, m (freq.*midpoint), fm relative frequency cumulative freq...
The average monthly electric bill of a random sample of 256 residents of a city is $90 with a standard deviation of $24. Construct a 95% confidence interval for the mean monthly electric bills of all ...
The solution gives the Minimum or maximum possible profit? Component A is or is not a binding constraint? Component B is or is not a binding constraint?. Valencia Products makes automobile radar de...
 . A group of participants was surveyed and the information collected shown in the partially completed contingency table below regarding the site of skin cancer. Firstly, calculate the missing values...
2. Consider the table for a 2—class tree classifier with classes {+,—} below giving the number of +'S and —'s reaching each node. .5 O O.- (D +/— terminal 40/60' 22/35 18/25 15/5 7/30 12/5 ...
Please give explanations or analysis for each model and then give the correct choice for the questions below three models.. Examine the three residual vs fitted plots for three data sets after fitting...
For 1(c) the resulting three regions can be sketched over the scatterplot of Petal Length vs Petal Width. The region with Petal Width less than or equal to 2.5 will be classified as Setosa, the region...
Please solve this question with all processes.. Consider the following interval formula: (A) What does this interval represent? 0 Confidence interval for the intercept parameter 0 Confidence interval ...
One aspect of deterrence theory predicts that punishment is most effective at preventing crime when would-be criminals know that they stand a high likelihood of being caught and penalized for breaking...
Extensive data collected during the first half of this century showed clearly that in those years, American-born Japanese childern grew faster than did Japanese-born children. A research paper conject...
salary.txt: 107.13 58.93 150.92 72.32 77.69 75.52 96.59 128.93 93 104.26 88.07 72.29 95.71 73.96 78.76 90.14 107.15 137.01 61.31 45.79 105.98 83.73 83.49 87.83 80.27 110.41 101.06 81.26 123.51 140.57 ...
During elections, honesty of the politicians is one of the most important factors impacting voters' decision. A researcher is curious if voters in Pennsylvania, New Jersey, and North Carolina think th...
The lack of a pattern in the error term plot that is distributed around (0,0) indicates that the net effect of all variables excluded from the model on the dependent variable is zero. Group of answer ...
The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If​ convenient, u...
Consider two events X and Y that have marginal probabilities of 0.64 and 0.59 respectively.  Their joint probability is 0.44. Calculate the probability that event X occurs if Y has occurred. (3 decim...
A deck of cards contains RED cards numbered 1,2 and BLUE cards numbered 1,2,3,4,5. Let R be the event of drawing a red card, B the event of drawing a blue card, E the event of drawing an even numbered...
A deck of cards contains RED cards numbered 1,2,3,4,5 and BLUE cards numbered 1,2,3,4. Let R be the event of drawing a red card, B the event of drawing a blue card, E the event of drawing an even numb...
Previous studies have found 28% of all people prefer Coke to all other cola drinks. A random sample of 19 people is selected. What is the probability  exactly three people in this sample prefer Coke?...
A deck of cards contains RED cards numbered 1,2,3 and BLUE cards numbered 1,2. Let R be the event of drawing a red card, B the event of drawing a blue card, E the event of drawing an even numbered car...
Paired Samples Statistics   Mean N Std. Deviation Std. Error Mean Pair 1 I drive conservatively to use less fuel. X1 5.02 1000 2.039 .064 I drive an automobile that is fuel efficient X2 5.33 1000 2.3...
PSYC 3020 Project Requirements You are being given an Excel spreadsheet containing data and a brief description of the research design and research questions. These data come from a study of satisfact...
One-Sample Statistics   N Mean Std. Deviation Std. Error Mean I am worried about global warming. 1000 4.88 1.329 .042 One-Sample Test   Test Value = 0 t df Significance Mean Difference 95% Confidenc...
 . 9305 AM Mon Mar 27 I I n 1.? 550A: - . Assignment19Winter2023v 6) Q9 [2] X There is one more REQUIRED question on the next page. J B10. You MUST make up a pick the test question and provide the an...
  a) What test would you use? (be specific with the name) b) Why would you use this test? i) What are Ho and Hi ii) I.V and D.V. iii) one or two tails iv) what alpha v) are you more worried about typ...
 . Part III Questions 15-16 Questions 15-16 pertain to the following graph, representing some unspecified variable, measured in 1000 individuals. 200 150 Frequency 100 20 40 60 80 100 120 Question 15...
 . Question 1 (1 point) Which of the following is most affected by skewing and outliers? O Median Interquartile range 50th percentile Mean Question 2 (1 point) The Law of Large Number states that, ba...
A city had 900 deaths during the year, and of these, 300 were from cancer and 200 from heart disease. What is the probability that the next death will be from  A) cancer? B) either cancer or heart di...
Scenario Background: A marketing company based out of New York City is doing well and is looking to expand internationally. The CEO and VP of Operations decide to enlist the help of a consulting firm ...
4. On average about one child in every 10,000 live births in the United States has phenylketonuria (also known as PKU). What is the probability that  A) the next child born in Boston Hospital will ha...
 . a. Less than 30 seconds. b. More than 120 seconds. c. Between 45 and 75 seconds.. 1. Let X define the random variable that is defined as the sum of two fair dice. Find the following probabilities....
Please review information below and kindly answer questions that follow:   4.1.    The aim of Mr. Modise's study is to investigate the relationship between managerial sensemaking of uncertainty and...
 . Suppose we regress salary Y on a dummy for whether the employee has degree in magic illusions D = 1 or in acrobatics D = 0 and other regressors. Suppose the estimated coefficient on D is 10 and th...
2. In the case of two groups, we might consider using linear regression as a classification method. Specifically, given data (91, x1), . .., (9n, ,) (where g1, . ..,9, each take one of two possible va...
 . Consider random samples of size 86 drawn from population A with proportion 0.48 and random samples of size 62 drawn from population B with proportion 0.18. Part 1 (a) Find the standard error of th...
I need help with these 4 questions. Certain radioactive material decays in such a way that the mass remaining after t years is given by the function m(t) = 355e-0.04t where m (t) is measured in grams....