Statistics and Probability questions and answers in March 2023

 . At a particular restaurant, 46% of all customers order an appetizer and 43% of all customers order dessert. If 20% of all customers order both an appetizer and dessert, what is the probability a r...
 . (S 10.2) Test the null hypothesis Ho : p = 0.5 against the alternative hypothesis HA : p < 0.5 , when 85 individuals in a random sample of 213 have a characteristic of interest. Calculate the v...
God's Own: The Genesis of Mathematical Story-telling The Genesis of Mathematical Story-telling  and watch the ACE video on Ndebele Doll Making in the course materials section of Blackboard.   What p...
Ho:a = 1,400 Haμ> 1,400 x = 1,416, n = 114, σ = 110, a = .10 Appendix A Statistical Tables a. Use the data given to test the following hypotheses. (Round your answer to 2 decimal places, e.g. 15....
Means   Nationality N Mean StDev 95% CI CAN 37 5420267 3665496 (4294459, 6546075) Other 40 2580750 3239295 (1497983, 3663517) USA 45 3483333 3471974 (2462490, 4504176)   Tukey Pairwise Comparisons ?...
A toll bridge charges $1.00 for passenger cars and $2.25 for other vehicles. Suppose that during daytime hours, 60% of all vehicles are passenger cars. If 20 vehicles cross the bridge during a particu...
        10 ) One journal reported on a study of homophone spelling in patients with a certain disease. Twenty patients were asked to spell 24 homophone pairs given in random order. Then the number...
 . 4. The table below gives the U.S. consumer price index (CPI) for selected years from 2012 and projected to 2050. With the reference year as 2012, a 2020 CPI=120.56 means goods and services that co...
 Express Bike Works: Washing in Style this question is about Niraj Taksande, the owner of Express Bike Works (EBW), is planning to expand his bike washing business to various locations in South India...
Suppose SAT Writing scores are normally distributed with a mean of 498 and a standard deviation of 108. A university plans to award scholarships to students whose scores are in the top 4%. What is the...
Look at charts and answer however you can 1. Begin your report with an overview of the analysis: what are the goals of the study? What are the relevant variables, and how will you be analyzing them? ?...
A deck of cards contains red cards numbered 1,2,3 and blue cards numbered 1,2,3,4,5. Let R be the event of drawing a red card, B be the event of drawing a blue card, E be the event of drawing an even-...
An individual treats other things, people, etc., as object to be used and experienced. Essentially this form of the objectivity relates to the world in terms of the self- how an object can serve the i...
"Innocent until proven guilty" is a well-known legal maxim in this nation. Respond to the questions that follow once you have learned about hypothesis testing and the many kinds of errors. How does th...
Revision (show thorough working)   At a large restaurant, 3 out of 5 customers ask for water with their meal. A random sample of 10 customers is selected. Find the probability that Exactly 6 ask for ...
Working Professional College magazine was developed for a target audience of recent college graduates who are in their first 10 years in a business/professional career. In its two years of publication...
 . A 3D bar graph is used to show two independent variables simultaneously, and their potential relationship with a dependent variable. This type of graph allows you to examine the relationship betwe...
The values and relative frequencies for a set of data are shown below. Complete the cumulative relative frequency table. Provide your answer below:     Data Value Relative Frequency Cumulative Relat...
      3. Time for some tedious, by-hand practice just to see if you can get the numbers right. Using the following information, calculate the t-test statistics by hand. X1 = 62 X2 = 60 n1 = 10 n2 =...
case study 5  Question 1.  build up a model to solve the problem. this model should find the optimal solution such as which teacher should teach which courses and in which time and day. question 2. ...
    Question 1: Explain why a one-way ANOVA should be conducted to compare the mean salary of the players nationality groups as opposed to a series of three independent means t tests.    Question ...
what code do I need to make the following in R studio?   •First, a 3-way collapsing table with two job titles (Teacher & Manager), 6 levels of working experience (i.e., 1 to 5, 5 to 10...), and...
Find the regression​ equation, letting overhead width be the predictor​ (x) variable. Find the best predicted weight of a seal if the overhead width measured from a photograph is 2.4 cm. Can the p...
    PLEASE USE JMP SOFTWARE Y X1 X2 X3 X4 7.7 78 284 34.1 109 9 68 433 33.7 144 7.2 70 739 32.2 113 8.7 96 1792 33.9 97 9.7 74 477 33.3 206 8 111 362 35.9 124 8.4 77 671 35 152 8.4 168 636 34.1 162 ...
Background Information  Youth delinquency, criminal acts committed by juveniles (usually defined as being between 7 to 18 years old) is on the rise in the past 2 years in Y TOWN . This is a growing c...
Please answer parts 1-9 and if possible, the bonus question, relating to graph theory and probability.  . pairing up people one to one and swapping their mail might raise suspicion, BagelBot settles ...
Suppose a random sample x_1,....,x_100 is generated from the chi-square distribution with degrees of freedom 3. Let x ̅ be the sample average, i.e., x ̅=(x_1+⋯+x_100)/100 . Please calculate var(x ...
what code do I need to make the following?   •First, a 3-way collapsing table with two job titles (Teacher & Manager), 6 levels of working experience (i.e., 1 to 5, 5 to 10...), and 3 levels of...
The number of students in the tutoring center was recorded for 33 randomly selected times. The data is summarized in the frequency table below.   Number    of Students      Frequency    0 ...
A random sample of 63 produced the summary statistics x=0.387 and s2=0.033. a. Test the null hypothesis that μ=0.42 against the alternative hypothesis that μ<0.42, using α=0.10. What is the valu...
Please answer each part of this question in writing! Thank you.  . There is a think tank that wants to understand people's opinions on purchasing electric or hybrid vehicles. They conduct a study tha...
1. The results from an independent-measures t hypothesis test are reported as "t(24) = 3.85, p < .01, two tailed."The research study for this test used a total of 26 subjects.​ Group of answer ch...
 . Question 13 (1 point) You are looking for a way to incentivize the sales reps that you are in charge of. You design an incentive plan as a way to help increase in their sales. To evaluate this inn...
(All ONE problem just split into several parts.) I provided pictures of drop down answer options for the parts that require them, please use and thanks for your time. . The weekly running distance wa...
The heights of fully grown trees of a specific species are normally distributed, with a mean of 63.0 feet and a standard deviation of 6.50 feet. Rand samples of size 18 are drawn from the population. ...
Question 1 (1.33 points)     Saved             Taking an herbal extract allegedly allows you to lose 5 pounds in 5 days. You decide to test this by enlisting 12 classmates. You weigh each clas...
An Air Quality instrument logs 0 when standards are not met and 1 when standards are met. The log is saved to file DATA. First, compute the proportion meeting standards as the mean of Air Quality val...
Bobo's Bad Burgers fast food claims you will be in and out in 5 minutes. To test this claim, time in minutes from entering Bobo's to receiving the order was secretly recorded. The results are document...
what is the null and alternative hypotheses  in terms of parameters , report  the value of the appropriate test statistic, the distribution of the test statistic under the null hypothesis, and the ...
 . Visit your local library: On a recent Saturday, a total of 1253 people visited a local library. Of these people, 245 were under age 10, 458 were aged 10-18, 173 were aged 19-30, and the rest were ...
Johnson Filtration, Inc., provides maintenance service for water-filtration systems throughout southern Texas. Customers contact Johnson with requests for maintenance service on their water-filtration...
A Comparison of Teaching Strategies   In any learning environment, there are several different teaching strategies. These strategies (which can be  composed of several components such as homework, ...
You run an analysis and get the following information (use this information to answer questions 21-22, 5 points each):   Mode = 15, Median = 17.5, Mean = 21.4, Skewness = 2.86, Kurtosis = 3.45   21....
Help. Question 3 Type numbers in the boxes. A group of 42 college students from a certain liberal arts college were randomly sampled and asked about the number of alcoholic drinks they have in a typic...
A manufacturer knows that their items have a normally distributed length, with a mean of 12.4 inches, and standard deviation of 4.1 inches. If one item is chosen at random, what is the probability tha...
I'm having trouble with H. I keep getting the error "Objective cells must be a formula". I'm not sure how to fix.. 1IE'ou will follow the invesnnent allocation guidelines below. I More money should be...
 . Coefficients Standardi zed Unstandardized Coefficien Coefficients ts Model B Std. Error Beta Sig (Constant) 9.417 1.421 6.625 000 HIGHEST YEAR OF SCHOOL COMPLETED 2.488 108 520 23.056 000 a. Depen...
How would this problem be computed in an excel document, please? The average cost for the sample of 5 sales of a product is = $230 and the sample standard deviation is s = $17.50. The hypothesized mea...
 . Below is a table from a study by Ekelund et al. (2007) in which the authors examined the potential relationship between objectively measured physical activity and sedentary behavior, self-reported...
I am having trouble finding the test statistic for both parts of this question. The data that is used for this question comes from this link: https://docs.google.com/spreadsheets/d/1rh7fxl3WAoie2ZqB4p...
The average lifetime of a certain new cell phone is three years....   The average lifetime of a certain new cell phone is three years. The manufacturer will replace any cell phone failing within two ...
 . Among 20 golden hamster litters recorded, there was a sample mean of x = 7.72 baby hamsters, with a sample standard deviation of s = 2.5 hamsters per liter. Create a 97% confidence interval for th...
When is it appropriate to use a one-sided hypothesis test? Group of answer choices  When you alternative proportion hypothesis is either less or greater than  Only when your alternative hypothesis p...
   . A health insurance broker records the monthly extended health and dental insurance premiums for 18 non-smoking white-collar clients between the ages of 31 and 40 (measured in $): 146 67 110 135...
1. In a study of the length of time that students require to earn bachelor's degrees, 80 students are randomly selected and they are found to have a mean of 4.8 years. Assuming that the population sta...
 . 4. How many different 13-card hands can be dealt having exactly 4 spades and 5 diamonds? 0 6227020800 0 1.375x10'". 5. In how many ways can 12 people be separated into 4 equal groups to do ...
If the amount of variability between-means/groups is significantly less than the amount of variability within-groups, then ________. Question 1 options: a) conclude that the ratio of between-means var...
 . Use the accompanying set of dependent and independent variables to complete parts a through c below. Click the icon to view the data set. a) Using technology, construct a multiple regression model...
 . RESEARCH STUDY 9.1: Dr. Farah is an educational psychologist who is interested in studying the potential causal relationship between doing homework and academic achievement. In January, Dr. Farah ...
 . You may need to use the appropriate technology to answer this question. Suppose a company surveyed the work preferences and attitudes of 1,006 working adults spread over three generations: baby bo...
1 2 3 4 5  . A property was purchased for $4873.00 down and payments of $1465.00 at the end of every year for 6 years. Interest is 7% per annum compounded monthly. What was the purchase price of the ...
You have been hired by the Regional Real Estate Company to help them analyze real estate data. One of the company's Pacific region salespeople just returned to the office with a newly designed adverti...
 . Assume that the duration of human pregnancies can be described by a Normal model with mean 265 days and standard deviation 15 days. a) What percentage of pregnancies should last between 270 and 27...
SOC 201 Lab Section Week 11   1. Scientists examined data on mean sea surface temperatures (in degrees Celsius) and mean coral growth (in millimeters per year) over a several-year period at locations...
      (a) Find the​ least-squares regression line treating the commute​ time, x, as the explanatory variable and the index​ score, y, as the response variable. y= x+ () ​(Round to three dec...
 . 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 /. Once at the top, the monkey can only fall with ...
The given data represent the total compensation for 10 randomly selected CEOs and their​ company's stock performance in 2009. Analysis of this data reveals a correlation coefficient of r=−0.2220. ...
You are the superintendent of a state park that is open every day during the summer. You must order ice cream for the month of July at the beginning of June. You have conducted a sample of daily ice c...
At Hopewell Electronics, all 140 employees were asked about their political affiliations: Democrat, Republican or Independent. The employees were grouped by type of work, as executives or production w...
variable1 variable2 5.92418 16.01040 -2.15342 6.90096 -5.68710 3.20965 -2.35173 8.11837 9.13267 20.86393 8.84593 17.88436 0.60205 11.33976 4.30225 13.72104 -9.69073 0.22652 -6.81619 2.88607 7.00841 14...
Q2. A camera has been developed to detect the presence of cataract more accurately. Using this camera, the gray level of each point (or pixel) in the lens of a human eye can be characterized into 256 ...
 . Every cereal box has a gift inside, but you cannot teLL from the outside what the gift is. The store manager assures you that 18 of the 4? boxes on the shelf have the secret decoder ring. The othe...
 . For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 27 students, and the distribution of total study hours per week is bell-s...
1.    2.    3.    4.    5.    6.    7.    8.    9.    10.     . An experimenter testing for extrasensory perception has three cards with pictures of a (s)tar, a (circle, and (wigg...
Let x 1 , x 2 , ... , x n be a random sample from the population with mean μ and variance σ 2 . Then for a large n, the mean of the random sample will be normally distributed with mean μ and varian...
 . AutoSave OFF WA FOG ... 3 QUA2343 - Assignment 3 Home Insert Draw Page Layout Formulas Data Review View Automate ? Tell me Comments Share Calibri (Body) v 11 AA Wrap Text General Insert Ex AY- O. ...
 . A town has a water treatment plant with capacity to handle 139 gigalitres per year. The current demand for water per year is 100 gigalitres. However, this seems to fluctuate over time with an annu...
USE ONLY R. PLEASE PROVIDE A THOROUGH EXPLANATION AND THE STEPS AND THE SCRIPT . ITS DIVIDED INTO 2 PARTS  . Part 2 To evaluate whether meditation has an effect on sleep quality, 10 students were rec...
Please help. 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 ...
The average sales price of single-family houses in Mooresville is $345,000 with a standard deviation of $15,000. A random sample of 80 single-family houses in Mooresville is selected. Let X¯ represe...
A researcher records the following data for each of four groups. Can an F statistic be computed for these data? Explain. Group A.    Group B      Group C        Group D 3              ...
At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is .31 (c) Find the probability that in a sample of 6 customers, fewer than 5 will order a non...
 . A researcher finds a 0.40 Pearson's r correlation between the height and weight of 27 third graders. What is the correct decision about the null hypothesis test using two-tails? O Fail to reject ...
It has been estimated that 18% of all university students switch majors within their first two years of starting classes. If a random sample of 440 third-year students is taken at a city university, w...
A casino game involves a dealer tossing a weighted coin 5 times in front of a player so that the player sees the outcomes of these 5 tosses. The player then must guess the outcome of the next flip of ...
On the midnight shift, the number of patients with head trauma in an emergency room has th probability distribution shown below. x 0 1 2 3 4 5 total P(x) .02 .31 .25 .19. .13 .10 1.00 (a)Calculate the...
Scientists have done an experiment at two universities. At the first one they followed 10,000 for four years and found 41 cases of scurvy. At the other they followed 20,000 for three years and found 2...
   . A simple random sample of 32 men from a normally distributed population results in a standard deviation of 10.9 beats per minute. The normal range of pulse rates of adults is typically given as...
 . Tom is driving on the highway at constant speed, 116 (km/hr). The speed enforcement officer (SEO) takes n :4 independent readings of the speed of a car where the error in each reading, E, is Norma...
Manufacturer A B C D 25 23 25 22 23 21 25 23 21 23 25 23 23 24 21 22. To test whether the mean time to mix a batch of adhesive is the same for machines produced by four manufacturers, TiteBondMax obta...
 . D Question 21 2 pts When proper probability notation is used, a numerical probability will never be less than O or greater than 1. True False D Question 22 2 pts The symbol u represents the popula...
 . Canvas X X U De Question 15 15 pts Victor, Jesse, and Jaylin are talking about how often they are distracted by their phones while working on classwork. They all decide that for the next week, the...
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Please help me! I am struggling in the last few chapters of STATS 151. I am panicking right now because it is almost final exam week. Please provide detailed explanation for each question so I may und...
After calculating this 2x3 covariance matrix, how do I get a sum of 0.01896? Thank you. Q3 (Essential to cover a, b, d, e) Consider an investment universe consisting of three asse with the following c...
   . 10. The observation, x(u), and desirable, z(u), are given by x(u) = w(u)x1 + v(u)x2 z(u) = v(u)Z1, where 16 X1 - [8] x -18 Z1 = 8 and the joint probability of w(u) and v(u) is given by. w(2) 0 ...
A company prices its tornado insurance using the following assumptions: • In any calendar year, there can be at most one tornado. • In any calendar year, the probability of a tornado is 0.07. • ...
At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is .31 (a) Find the probability that in a sample of 6 customers, at least 3 will order a nonal...
Housing prices in a small town are normally distrib $125.000 and a standard deviation of $7.000. Us complete the following statement. Approximately 95% of housing prices are between Ex: 5000 =) and a ...
Which out of the 3 is it?. The figure below shows a randomization distribution based on 1000 simulated samples for hypotheses Ho: /, - #2 vs H. : M1 # #2. The statistic used for each sample is D = X1 ...
Consider the scenario: A research paper claims a meaningful contribution to the literature based on finding statistically significant relationships between predictor and response variables. In the foo...
7525) 550on hot, sunny, summer days , jane rents inner tubes by the river that run through her town. Based on her past experience, she has assigned the following probability distribution to the number...
 . 42 AIDS Clinical Trial Group (ACTG) study 193A was a randomized, double- blind, study of AIDS patients with advanced immune suppression (CD4 counts of < 50 cells/mm!) (Henry et al., 1998). Pati...
 . An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two...
Assume you have noted the following prices for books and the number of pages that each book contains. The information is also stored in the file named    Book Pages (x) Price (y) A 500 $7.00 B 700 7...
Please help ASAP! Thanks!. < Quiz 2 - Chapter 4 52 : 58 Question 6 of 8 < > - 13 E ... View Policies Current Attempt in Progress Terry & Sons makes bearings for autos. The production syst...
Background Info:     ȳ=(72+74+7 6+77+81+84+85+91)/8= 80.25 Population variance : σ 2= N 1​∑ i =1 N ​( Yi ​− μ )2 N = population size= 8 Yi = population values  μ = population mean   ...
At a Noodles & Company restaurant, the probability that a customer will order a nonalcoholic beverage is 42   a)     find the probability that in a sample of 6 customers, none of the 6 will ord...
In a test of the hypothesis H0: μ=50 versus Ha: μ>50, a sample of n=100 observations possessed mean x=49.4 and standard deviation s=4.7. Find and interpret the p-value for this test. Question con...
1) Lacy draws a '5' from a standard deck of 52 cards. Without replacing the first card, she then proceeds to draw a second card and gets a '7'. Are these events independent? Input Yes or No:  Linda d...
 +=find the mean and standard deviation for each binomial random variable    a.       n =65. π = .75 (Round mean value to 2 decimal places and standard to 4 decimal place) Mean           ?...
 . D Question 3 1 pts The collection of all elements of interest in a study is the population O the sampling O statistical inference O descriptive statistics Previous Next > Quiz: Week 2: Qui. So ...
Helpp. According to a study on the effects of smoking by pregnant women on rates of asthma in their Type numbers in the boxes. children, for expectant mothers who smoke 20 cigarettes per day, 22.4% of...
the number of tickets purchased by an individual for Beckham college's holiday music festival is uniformly distributed random variable ranging from 1 to 9    find the mean and standard deviation  o...
 . Consider the following random experiment: we toss a two-sided coin (H on one side and T on the other side) n = 3002 times. In any given toss, the probability the coin comes up H is p = P(H) = 0.33...
 . 2t-table.xls X Do Homework - MyLab #8 (Ch. x + om/Student/PlayerHomework.aspx?homeworkld=640905499&questionld=4&flushed=false&cld=7246093&back=DoAssignments.aspx tHealth Sha... V M...
Asap. Current Attempt in Progress An article presented data on compressive strength x and intrinsic permeability y of various concrete mixes and cures. Summary quantities are n = 14. > >. = 572,...
According to a recent​ report, 45​% of college student internships are unpaid. A recent survey of 60 College interns at a local university found that 36 had unpaid internships. a. Use the​ five-...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical ...
 . The following plots identify the length of delay (in days) and the corresponding cumulative probabilities for each of two methods, 1 and 2, of transporting an item from Toronto to Vancouver. As in...
Capítulo 6: ¿Qué te gusta comprar? Funciones y formas: Cosas de familia The following are some facts about Elena's family. Select the option that best completes each of her statements.  1.  Mi he...
1. What do you think is the aim of hypothesis testing? 2. What does hypothesis testing achieve that could not be otherwise achieved? Questions are taken from "Essentials of Social Statistics for a Div...
In a test of the hypothesis H0: μ=50 versus Ha: μ>50, a sample of n=100 observations possessed mean x=49.3 and standard deviation s=4.8. Find and interpret the p-value for this test. The p-value ...
Asap. Karen wants to advertise how many chocolate chips are in each Big Chip cookie at her bakery. She randomly selects a sample of 24 cookies and finds a highly skewed distribution, along with an ave...
Question 6 A group of people was asked if they had run a red light in the last year. 410 responded "yes" and 185 responded "no". Find the probability that if a person is chosen at ...
In a test of the hypothesis H0: μ=40 versus Ha: μ>40​, a sample of n=100 observations possessed mean x=39.5 and standard deviation s=3.5.  Find and interpret the​ p-value for this test. T...
Effect size for the chi-square test for independence Which of the following statements are correct about the phi-coefficient? Check all that apply. It is determined only by the proportions in a 2 x 2 ...
  Consider a manufacturing process that is producing hypodermic needles that will be used for blood donations. These needles need to have a diameter of 1.65 mm—too big and they would hurt the donor...
A sample of students that had stuffy or runny noses were blindly given a single Skittles candy to put in their mouth. They were told the five possible flavors and then were asked which flavor they had...
The mean score on Exam 1 for Ms. Frizzle's class was 78.3%, the median score was 80%. What does this mean about the distribution of the class's scores? (4 points A) The scores were left-skewed. b The ...
4 According to the financial institution Charles Schwab, the mean return for a conservative investment portfolio they offer is 3.27% with a standard deviation of 3.35%. A financial analyst is interest...
A sample of students that had stuffy or runny noses were blindly given a single Skittles candy to put in their mouth. They were told the five possible flavors and then were asked which flavor they had...
Question 1 In June 2021, Gallup published an online article titled Public Backs Requiring COVID-19 Vaccine to Attend SchoolLinks to an external site. by Jeffrey M. Jones. According to the article, 61%...
The weights of adult males follow an approximate normal distribution with mean 175 lbs and standard deviation 26 lbs.  Find the probability that a randomly selected man will weigh less than 150 lbs. ...
 . In this problem, round to 3 decimal places. Suppose the true proportion of voters in the county who support a restaurant tax is 0.61 . Consider the sampling distribution for the proportion of supp...
Asap. Quiz 4.3 Random variable X has probability density function fx (T) - Jere -12 5 20. otherwise. Sketch the PDF and find the following: (a) the constant c (b) the CDF Fx(r) (c) PO < X < 4] (...
Asap nochat gpt answer report dislike . View Policies Current Attempt in Progress Use the normal distribution and the given sample results to complete the test of the given hypotheses, Assume the res...
Using the values for the total number of candies per bag from the entire class (copied below), create an appropriate graph for quantitative data. Be sure to label and title your graph appropriately. Y...
 . A sample of 65 observations is selected from one population with a population standard deviation of 0.75. The sample mean is 2.67. A sample of 50 observations is selected from a second population ...
Prompt Harris Interactive® conducted a poll of American adults in August of 2011 to study the use of online medical information. Of the 1,019 randomly chosen adults, 60% had used the Internet within ...
The regression equation and the standard error of estimate The following scores represent the decrease in symptom intensity (on a 10-point scale) following the new nutrition therapy.   Scores Patient...
 . jobs. The sample showed that 204 had part—timejobs Calculate the 95 percent confidence interval forthe true proportion of students 8 A random survey of 400 students was concluded from a populati...
Use a significance level of .05 for all analyses.   A researcher wanted to determine whether showing a word upside down versus right side up affects memory of the word.  Thirty students were randoml...
 . 2) Let X and Y be jointly continuous random variables with probability density function given by: f (c, y) = (xty) for 0 < <3, and 0 <y < 1 otherwise a) Find oxy. (/2) b) Find E(Xly). ...
Asap. Consider the following data for the control chart. The lower control limit, the centerline and the upper control limit are set at 41, 53 and 65, respectively. Sample Measurement A 54 B 66 C 69 D...
Asap . 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 r...
 . Consider the following count models fitted using the glm command in R, between (i) Model 1: ycount(the response variable) and x1 (the covariate) and (ii) Model 2: ycount (the response variable) an...
The article developing and testing research instruments by Dr. Hamed Taherdoost provides some pointers for new research instruments. The article is focused on producing sound questionnaires for educa...
The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers​ (and use an incentive of​ $50 worth of downloads to gu...
 . In this problem we show directly that the sum of independent Poisson random variables is Poisson. Let J and K be independent Poisson random variables with expected values a and ,6, respectively. S...
 . Question 6 The mean is affected by: Not yet answered Select one: Marked out of O a. The order of the data in the data set 1.00 O b. Extreme values known as outliers O c. Percentile rank O d. The n...
MAT 160 - Confidence Interval Practice Worksheet ZInterval Problems In a study of the length of time that students require to earn bachelor's degrees, 80 students are randomly selected and they are fo...
In a local university, 63% of the students live in the dormitories. A random sample of 80 students is selected for a particular study. We know that the standard error of the proportion is 0.0540. Find...
 . Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial distribution. Then determine if the events are unusual. If convenient, use the appropri...
Scenario 1: Employees are asked to participate on a 20-question survey regarding their experience of a mandatory training workshop they have just attended. Employees are asked to complete the survey i...
 . Information Questions 1- 2 are based on the following interval table: Daily time spent on social media platforms Time (minutes) Frequency 0 -15 53 16 - 30 62 31 -45 78 46-60 77 61 -75 92 76 -90 61...
Aerobic, Resistance, and a combination of Aerobic+Resistance Training could all be used as potential modes of exercise to acheive weight loss in adults with obesity. When compared to diet alone, exerc...
Graph the following non-linear system of equations and identify the two solutions. (Remember that for a system of equations to a linear system, all the equations would have to be linear. If even one f...
https://www.statisticshowto.com/probability-and-statistics/excel-statistics/excel-regression-analysis-output-explained/   Share your thoughts on the way in which the approach to research might have a...
 . 1. (13 points) A plant grower was considering two types of grow lights. She started hundreds of plants from the same batch of seeds, using the same soil and containers for all the plants. She grew...
please write the answers only and send back. 1) Which of the following values could not represent a correlation coefficient? A) -1 B) 1.032 C) 0.927 2) The data below are the final exam scores of 10 r...
 . A city planner surveyed 133 residents. For each, the planner recorded whether the resident owns a car and whether the resident lives alone. The results are summarized in the table below. Alone Not...
Physical Activity is important for the prevention and management of Type 2 Diabetes and many Cardiovascular Disease Risk Factors. Sedentary Time, as well as "breaks" in sedentary time are associated w...
Help with this question:    . EXERCISE 10-7 Scientists developed a new memo-d of determining serum iron concentrations. To check the accuracy of the method, they made 20 analyses of control sera. wi...
plase look up a public company on their own. A public company is a company that sells stocks on the stock exchange; For example, Google, Nike, and Proctor and Gamble (try an uncommon company) and look...
 . When many small businesses were surveyed, 84.2% said they employed women in some capacity. Of the businesses that employed women. 16.6% employed no female supervisors, 47.6% employed only one fema...
 . A group of participants was surveyed and the information collected shown in the partially completed contingency table below regarding gender and the attitudes on abortion. Firstly, calculate the m...
The mean score for a class sitting a Physics test is 46, with stan- dard deviation of 4. The mean score for the same class in a Chem- istry test is 77, with standard deviation of 9. Each set of scores...
Out of 100 people sampled, 21 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places  <...
I would like to conduct a qualitative analysis or research on mental health stigma among college students. I need assistance with answering the following questions:   For project proposal please answ...
The city of Raleigh has 7700 registered voters. There are two candidates for city council in an upcoming election: Brown and Feliz. The day before the election, a telephone poll of 350 randomly select...
Question 6 Not yet answered Marked out of 1,00 P Flag question Refer to the following set of scores (X values): 4, 0, 3, 2. For these data, what is E( X + 1)?? Select one O a 47 O b. 51 O c. 100 O d. ...
​ ​. 8. Let the weight of the chocolate cakes produced by Bernard's Brilliant Bakery be the random variable X. Assume that any of Bernard's chocolate cakes has an expected weight of u grams, and a...
What is the relationship between the confidence level and the significance level? Group of answer choices  There is no relationship  The confidence level is the significance level plus one  The sig...
The marketing team at an internet music site wants a better understanding of who their customers are. They send out a survey to 25 customers​ (and use an incentive of​ $50 worth of downloads to gu...
Suppose there is a population of five people with height in inches as follows: 58, 62, 63, 70, and 77. Calculate the population variance using a calculator. Show your work to derive the final answer. ...
 . A recent survey of college students finds that the median amount of time spent daily online is 7.5 hours, with a mode of 6 hours. a) Interpret the median in a sentence(s). Make sure it is in the c...
A regional airline, Northwest Commuter, has started operating on the west coast of the United States. It has become established as a no-frills airline providing low-cost commuter flights between the w...
 . Page 1 > of 2 0 - ZOOM + Submit a answer file by due File name must be "first name-HW6.pdf or .doc or PNG or .JPG" Problem 1 Use the table of probabilities for the standard normal dis...
Fill in the following contingency table and find the number of students who both read mysteries AND read comics. Students read comics do not read comics Total read mysteries 70 do not read mysteries 3...