Statistics and Probability questions and answers in March 2023 — Page 13

Result and analysis  I use the following hypothesis to evaluate whether a high school GPA is a good predictor of a 1st-year college GPA. Ho: β1=0(High school GPA is not a good predictor of college G...
Solve and explain all work on paper  . 8 1. Consider the expansion 0ch2 (3x2 + f—C) . The constant is 16128. Find the value of k. 2. The math department has a tutoring program that is open on Tuesd...
Stats  . NOTE: Question 3 should be done using a calculator (not Excel). 3. [10 marks] The General Social Survey asked 1,152 adults (selected using random sampling method) in Vancouver to react to th...
 . Problem 2 a. Let X1, X2 and X3 be independent exponential r.v.'s with respective rates X1, A2 and A3 (not necessarily equal). Find the probability that X1 = min(X, 1 < i < 3) (hint: Compute ...
 . Problem 1 Let X be an exponential variable with unknown parameter A. We know that P (X < 10) = ; a. Find A. b. Compute P (X > 15). c. Compute P (X 2 15 X 2 10) (use the memoryless property)....
Please double check work. This is an Aleks assignment and I will be penalized for a wrong answer. Thank you!  . A marriage counselor has traditionally seen that the proportion p of all married couple...
 . A test was given to a group of students. The grades and gender are summarized below A B C Total Male 11 20 40 Female 17 10 2 29 Total 28 30 11 69 If one student is chosen at random from those who ...
 . The table summarizes results from 982 pedestrian deaths that were caused by automobile accidents. Driver Pedestrian Intoxicated? Intoxicated? Yes No Yes 43 66 No 224 649 If one of the pedestrian d...
4. A) The average monthly expenditure of American consumers as estimated by the sample from the Consumer Expenditure Survey is a: population parameter or sample statistic or population distribution or...
 . A researcher is analyzing the relationship between various variables in housing data for 32 cities: median list prices of single family homes, condominium or co—ops, all homes, median household ...
 . In a random sample of five mobile devices, the mean repair cost was $60.00 and the standard deviation was $11.50. Assume the population is normally distributed and use a t-distribution to find the...
There are questions that start on page 12. The rest is included as a reference and context. This is the link to the movie lens 100k dataset: https://grouplens.org/datasets/movielens/    . 3/10/23, 1...
An unannounced quiz on Organic Chemistry was given to 10 students whose maximum score is 10 and the marks obtained were: 4, 10, 5, 5, 9, 8, 8, 10, 3, 4 Find the following Measures of Central Tendency ...
Some manufacturers claim that non-hybrid sedan cars have a lower mean miles-per-gallon (mpg) than hybrid ones. Suppose that consumers test 278 hybrid sedans and get a mean of 28.5 mpg with a standard ...
 . The monthly incomes for 12 randomly selected people, each with a bachelor's degree in economics, are shown 4450.91 4596.54 4366.07 on the right. Complete parts (a) through (c) below. 4455.07 4151....
EXAMPLE: A simple random sample of 1000 exiting voters was taken in which voters were asked about who they had voted for in the governor's race. Of the sample, 550 reported that they voted for the dem...
 . Part: 2 / 3 Part 3 of 3 (c) If someone's diastolic pressure is above average, would you expect that person's systolic pressure to be above or below average? Explain. I would expect the person's sy...
Assume that when adults with smartphones are randomly​ selected, ​52% use them in meetings or classes. If 25 adult smartphone users are randomly​ selected, find the probability that exactly 16 o...
Assume Z is a standard normal random variable.  What is P(-1.00<Z<1.00)?  Round your answer to 4 decimal places. Food for thought: This answer should remind you of the empirical rule.  Does t...
An airline has 15 daily flights and the average profit per flight is $6,000. Each flight requires one pilot. Flights that do not have a pilot are canceled. Pilots do get sick from time to time so the ...
Hotel problem continued: Each year J.D. Power and Associates publishes the results of its North American Hotel Guest Satisfaction Index Study. For 2019, the study revealed that 29% of hotel guests exp...
Assume that different groups of couples use a particular method of gender selection and each couple gives birth to one baby. This method is designed to increase the likelihood that each baby will be a...
Problem 7-23 Embassy Motorcycles (EM) manufacturers two lightweight motorcycles designed for easy handling and safety. The EZ-Rider model has a new engine and a low profile that make it easy to balanc...
1)What is the probability that there will be fewer than 2 defective parts in a shipment? 2)What is the probability that the shipment will have defective parts? 3)What is the probability that the shipm...
Test the statistic for this hypothesis test is _____. The P-value for this hypothesis test is ______. Identify the conclusion for this hypothesis test.. In a study of 796 randomly selected medical mal...
Assume that a toy store's annual profit is normally distributed with mean $100,000 and standard deviation $20,000. What amount of profit does the toy store need to earn to have a year in the top 2.5% ...
what is the P- value for this hypothesis test? Fail to Reject or Reject the H0?. In one study of smokers who tried to quit smoking with nicotine patch therapy, 40 were smoking one year after treatment...
Assuming that a pair of rabbits gives birth to 66 pairs in half a year, which is (approximately) the maturity period for "real" rabbits, find the recurrence relation for the number of pairs of rabbits...
The middle-square method (feel free to click on this link and read the wiki page) is a very old and very crude pseudorandom generator function invented by John von Neumann in 1949. Despite its many fl...
I need some assistance with this graph plotting question asap. Graph Plotting and Data Analysis Practise Exercise Exercise A The following data of power and time as shown in table I was generated by a...
 . You may need to use the appropriate appendix table to answer this question. The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket? Airfares were based...
 . The scatter plot shows the relationship between the number of coffee drinks sold and the total expenses of a coffee shop. 1500 1000 Total expenses (in dollars) 500 0 0 20 40 60 80 100 120 140 160 ...
Alice likes to play a lottery called Fastball. The Fastball lottery consist on selecting five number from the digits 1 to 70, and then select a Fastball number from the digits 1 to 30. The winner numb...
Given that: 30% of the applications received for a position in a graduate school are rejected. 1) Determine the expected number of rejected applications among the next 15 applications. 2)What is the p...
  The DellaVecchia Garden Center purchases and sells Christmas trees during the holiday season. It purchases the trees for ​$9 and sells them for ​$32. Any trees not sold by Christmas day are sol...
Alumni donations are an essential source of revenue for colleges and universities. Suppose administrators could determine the factors that influence increases in the percentage of alumni who donate. I...
Which statement below is not true regarding standardized distributions? Group of answer choices Standardized distributions consist of scores that have been transformed to create predetermined values f...
The following table contains the probability distribution for the number of traffic accidents daily in a small town. Complete parts​ (a) through​ (c) below.   Number of Accidents Daily​ (X)   ...
A trucking company determined that the distance traveled per truck per year is normally​ distributed, with a mean of 30 thousand miles and a standard deviation of 10 thousand miles. Complete parts?...
Are the events "passing your physics class" and "passing your calculus class" independent events? Why or why not? Yes because the occurrence (or nonoccurrence) of one of them does ...
 . A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for two weeks without the booster and ...
The University of Cincinnati Center for Business Analytics is an outreach center that collaborates with industry partners on applied research and continuing education in business analytics. One of the...
According to an article in  Newsweek , the natural ratio of girls to boys is 100:105. In China, the birth ratio is 100:116 (46.3% girls). Suppose you don't believe the reported figures of the per...
 . The mean systolic blood pressure for white males aged 35-44 in Canada is U. A report said that the mean blood pressure and standard deviation of a sample of 23 diabetic males aged 35-44 are 128.93...
 . A running coach wanted to see whether runners run at a different speed after eating spaghetti the night before a race. For a 5-km race, two samples were chosen: 8 runners who had a regular dinner ...
I nebed solution for these questions. 888 4 20 13 ese 3 lab caps lock shift See You Later Based on a Harris Interactive poll, 20% of adults believe in reincarnation. cont Assume that six adults are ra...
(S 8.1) The mean weight of loads of rock is 46.95 tons with a standard deviation of 10.11 tons. If 5 loads are chosen at " Rocks random for a weight check, find the probability that the mean weig...
Axline Computers manufactures personal computers at two plants, one in Texas and the other in Hawaii. The Texas plant has 60 employees; the Hawaii plant has 30. A random sample of 15 employees is to b...
I am not understand part b of this question. The data comes from this link https://docs.google.com/spreadsheets/d/1Q3ghIeL_wWcMoLXmgjMOFsaR-ubemI-7/edit?usp=sharing&ouid=109462358196556866355&amp...
A company surveyed its employees to determine what the new daily meal allotment dollar amount should be. Of the 159 employees, 74 responded. Pat's supervisor asked what the recommended dollar amount...
 . 14. When a new drug is created, the pharmaceutical company must subject it to testing before receiving the necessary permission from the Food and Drug Administration (FDA) to market the drug. Supp...
Indicate which of the following hypotheses are one or two tailed and if one tailed, indicate which side of the graph the tail would be found: a. Intermittent fasting reduces weight. b. Children who li...
Which of the statements represents a null hypothesis: a. There is a significant difference in behavior between people who take anti depressant drugs and those who do not take the drugs. b. There is no...
One year Dan had the lowest ERA (earned-run average, mean number of runs yielded per nine innings pitched) of any male pitcher at his school, with an ERA of 2.61. Also, Amber had the lowest ERA of any...
A department store polled 600 shoppers regarding whether or not they made a purchase, and whether or not they were pleased with the service they received. Of those who made a purchase, 113 were happy ...
A sample of 44 observations is selected from one population with a population standard deviation of 3.9. The sample mean is 102.0. A sample of 46 observations is selected from a second population with...
 . A video media consultant collected the following data on popular LED televisions sold through on-line retailers. Screen Manufacturer (in inches ) Price ($) Sharp 40 922. 50 Samsung 51 1, 537.25 Sa...
Q scores are normally distributed with a mean of 100 and standard deviation of 15 (μ = 100, σ = 15) A. The proportion (probability) of the distribution with scores of 105 or more is _____ B. The pro...
   . 4. Sample size, statistical significance, and practical importance Cities across the country are passing higher minimum wages, increasing the discrepancy between the wages in the city and those...
Suppose that customers arrive at a bank at an average rate of 4.3 per hour. Let X be a random variable that describes the number of customers arriving in the next hour, and let T be the random variabl...
 . It's proposed that the average life expectancy these days is 75.3, but recent data suggests it might be more than that. A sample size of 84 countries found a sample mean life expectancy of 78.5 ...
almost all employees working for a finical companies in new york city recieve large bonuses at the end of the year. a sample of 62 employees selected from finical companies in new york city showed tha...
X Your answer is incorrect. Forty-four percent of customers who visit a department store make a purchase. The probability, rounded to four decimal places, that in a random sample of 11 customers who w...
 . A hardware engineer at Apple is testing if the proportion of faulty keyboards for MacBooks manufactured from 2016 to 2019 is higher than0.459. The engineer decides to uses a hypothesis test. What ...
  Discuss how the regional sample created is or is not reflective of the national market. Compare and contrast your sample with the population using the National Summary Statistics and Graphs Real Es...
8. Suppose scores of all students in a large-enrollment accounting course are distributed continuously and  normally, with a mean overall percentage of 85% and a standard deviation of 6%.  a. If the...
Krisha is buying cakes for her sister's ninth birthday, and she wants to buy 9 small cakes. She can choose between chocolate and vanilla. There are 10 different designs for the chocolate cakes and 13 ...
   . Problem 9 The range of probability values is a. 0 to infinity b. minus infinity to plus infinity. C. exactly 0.5 d. -1 to 1. e. 0 to 1. Problem 10 The sum of the probabilities of two complement...
   . Problem 4 Each individual outcome of an experiment is called the sample space. a. b. iPhone c. a trial. d. an event. e. a sample point. Problem 5 The probability of an event given that another ...
 . Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs 0 1 2 3 4 5 Probability 0.680 0.204 0.076 0.020 0.014 0.006 (a) Find the mean, variance, and standard deviat...
The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6.0 ounces. Suppose the weights of pucks produced at a factory are normally distributed with a mean of 5.73 ounce...
 . A milk production company has a labeled contents of 500 ml for its lactose-free milk containers. Actual production suggests a normal distribution with a mean of 501 ml and a standard deyiation of ...
 . An apartment building has a single eieyator and the arriyal time of the elevator to the lobby has an exponential distribution with an expected response time of 2 minutes. State your distributional...
PDistrobutions.csv: Run ProdData 1 0.974 2 0.998 3 0.995 4 1 5 0.956 6 0.982 7 0.996 8 0.996 9 0.999 10 0.991 11 0.987 12 1 13 0.977 14 0.996 15 0.998 16 0.996 17 0.999 18 0.999 19 0.986 20 0.972 21 0...
The _______________________________________ sample involves dividing the population into groups, then randomly selecting some of the groups and taking either a sample or a census               ...
QUESTION 18 A certain manufacturer makes energy efficient LED light bulbs. After many years of product testing, the company knows that the average lifetime of these light bulbs is bell-shaped with a m...
??. Based on an American Chemical Society, there is a 0.9 probability that in the United States, a randomly selected dollar bill is tainted with traces of cocaine. After randomly selecting 8 bills, we...
???. When testing a method of gender selection, we assume that the rate of female births is 50%, and we reject that assumption if we get results that are unusual in the sense that they are very unlike...
 . Question 1 1 pts If 52 = 90 and n = 10, what is the estimated standard error? OSMD=1 OSMD=3 OSMD=2 0 5MD = 3.162 Question 2 1 pts For a repeated-measures study comparing two treatments with a samp...
   . The class ranks of a very small high school with 20 students are shown in the table below. Fr Fr Fr So So So 5r So So So So So Sr So So Jr So Fr So So a) Since data were collected for 1 v quali...
 . A college claims that the proportion, p, of students who commute more than fifteen miles to school is less than 15%. A researcher wants to test this. A random sample of 265 students at this colleg...
16. If X has PDF 𝑓(𝑥)=𝑘𝑥2 when 1≤𝑋≤3. (a) Find k. Ans: 3/26 (b) Find the CDF. Ans: 0 𝑖𝑓 𝑥<1,𝑥3−126 𝑖𝑓 1≤𝑥≤3,1 𝑖𝑓 𝑥>3. (c) Find the standard...
 . Let x = (X1, X2, X3, X4) be a 4-dimensional normal random vector with expected vector u and covariance matrix > with 2.0 4 1 -1 0 1.5 1 3 0 0 LL = :) = 0.5 0 2 -3.0 0 0 0 5 (a) Let 1.3 0.5 1.2 ...
At the Bank of California, past data show that 6% of all credit card holders default at some time in their lives. On one recent day, this bank issued 11 credit cards to new customers. Find the probabi...
In a PCB manufacturing company, a new product needs to be produced. The customer needs 1,000 PCBs. However, some of the PCBs may get rejected at the nial inspection stage due to manufacturing defects....
 . 3. An ant walks along a number line. It starts at position 0. Each second the ant either 0 moves 1 unit right with probabilty p, or 0 moves 1 unit left with probability 1 — p The ant's movemen...
 . 8. There are 50 roofs in a neighborhood that are all 200 sq ft. The number of raindrops that hit a single roof in one second is a Poisson random variable with u = 2. The number of raindrops one ro...
So there is a table but I can only add one image. Researchers investigated the serum cholesterol levels of all males in Canada who have both hypertension and smoke (or vape). A simple random sample of...
 . 10. [-/6.25 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Telecommunications companies providing cell-phone service are interested in customer retention. In particular, identifying cu...
 . 4. Two teams, A and B, play in a series. In each game of the series, either Team A wins or Team B wins — there are no ties. Team A has a 60% chance of winning each game7 independent of other gam...
QUESTION 5 "A survey asked 1500 American citizens whether they had suffered from food poisoning in the past year. There were 227 survey participants who responded "Yes". Determine a 95%...
I need help with creating the data on the SPSS statistics: this is a fake data that i chose. My Research question: Is there a significant difference in the grade point averages of students who worked ...
1. Identify the dependent variable (y) and the independent variables (x1, x2, ....) in the regression model.    2. Two steps are demonstrated in the Table 5. What is/are the difference(s) between th...
You are planning to invest your $10,000 savings in any stock for 365 days (365 points forecast). You got IBM data to analyze (attached) what will be ROI after 365 days if you invest in IBM stocks (att...
A school guidance counselor would like to hold an assembly for a group of students to discuss new school policies. The counselor would like to invite thirty students from the student body of 400 stude...
 . A matrix containing the monthly revenues of fast food companies, where each row represents a different restaurant and each column represents a different month. Dense Sparse A matrix containing the...
 . Hint: You may use the fact that the mean of x2(1) is 1 and the variance of x2(1) is 2. Can you write a x2(n) random variable into a sum of i.i.d. random variables? (3) (5 pts) Theorem 8.2.2 in DeG...
         . (2) (5 pts) Give an expression for the standardized A. What distribution does A have approx- imately with large n? What distribution does the standardized A have approximately with lar...
At a fundraiser, the drama club decides to sell candies and cookies at noon hour. The club can purchase supplies from the cafeteria and cafeteria has the following items: • five mars chocolate bars ...
   . Suppose X1, . .., Xn ~Exponential(0) with unknown 0. In this problem we will construct a (1 - @)100% confidence interval for 0. We will use the following results: The moment generating function...
1.During the COVID-19 pandemic, hospitals are experiencing numerous shortages. Along with PPE, hand soap and alcohol-based hand sanitizer are now in short supply. In an effort to potentially preser...
 . CHALLENGE ACTIVITY 2.3.2: Excel: Linear regression. Click this link to download the spreadsheet for use in this activity. 469870.3291240.qx3zay7 V Jump to level 1 1 According to the Farmer's Alman...
show all steps . QUESTION #2 (20 marks) The amount of oxygen consumption (ml/min) was measured in 6 individuals over two 10- minute periods while sitting with their eyes closed. During the first peri...
One inherent benefit of a logistic model is that  a) Estimated values of the response variable can take on any value  b) Estimated values of the response variable are bound between 0 and 1  c) Esti...
 . Suppose the sample X ~ Bin(100, p1) and Y ~ Bin(150, p2) and we observed X = 20 and Y = 40. Then, the 95% confidence interval for p1 - P2 . Assume we want to test H1 : p1 = p2 <> H1 : p1 / p...
For number 17 part 2 I need to find the margin of error.  . The equation for determining the sample size n = Zco E can be obtained by solving the equation for the margin of ame: error E = Zo Question...
Can someone help me solve this question?  . a. Fill in ANOVA table below. Use calculated value of the sum 3 2 i=1j =1k=1 ijk = 1468. Leave 3 digits after decimal point for the values of SST, SSA, SST...
You have a sample of 145 police officers and find that they spend, on average, 240 minutes in their patrol car. The population standard deviation is 22. Based on this information, calculate a 95% conf...
1. Mr.Hunter has five pairs of running shoes, eight pairs of sweatpants and twelve t-shirts.  How many different outfits can he wear? 2. A quarterback has a series of six plays possible.  If the coa...
Which of the statements is/are correct? [Multi Select Question] Question 13 options:  A)The best-fitting line is the line that minimizes the sum of squares of the deviations of the observed values of...
 . Test the claim that the mean GPA of night students is larger than 2.6 at the . 10 significance level. The null and alternative hypothesis would be: OHo : p = 0.65 H1 : p > 0.65 OHo : p = 0.65 H...
 . You wish to test the following claim at a significance level of a = 0.10. Ho : p = 0.6 H1 : p < 0.6 You obtain a sample of size 339 in which there are 188 successful observations. What is the t...
 . CHALLENGE . . ACTIVITY 2.3.2. Excel. Linear regressron. Click this link to download the spreadsheet for use in this activity. Jump to level 1 The famous iris dataset (the first sheet of the sprea...
I need typed answer with explanation. Suppose that the probability that a passenger will miss a flight is 0.0953. Airlines do not like flights with empty seats, but it is also not desirable to have ov...
If one finding is statistically significant at p <0.01 and a second at p < 0.05, it would be logical to say that  Question 6 options: *you can have greater confidence in rejecting the null hypo...
Can someone please help me with this question?. In order to study the differences in reaction times to the drugs used to treat certain tvpe of disease, a researcher conducted an experiment in which th...
  ONLY HIGHLIGHTED PROBLEMS        . 15. Between z = 1.09 and z = 1.83 16. Between z = 1.23 and z = 1.90 17. Between z = -1.46 and z = -1.77 18. Between z = -0.96 and z = -0.36 19. Between z = -1...
Can someone please help me with this question?. The table below gives experimental data for 2x2 factorial experiment, with 4 replications for each treatment. Levels of factor B 1 2 Levels of factor A ...
Can someone please help me with this question?. Answer the following questions. You do not need to show calculations for full mark. You can use free space below for rough work. a. A researcher wants t...
Can someone please help me with this question?. 3. (4 marks} A study was conducted to compare the gas mileages for four brands of gasoline, 1, 2, 3, and 4. (gas mileage is the distance in miles that t...
Can someone please help me with this question?. 4. [6 marks) lain experiment was conducted to investigate the effect of management training on the decision - making abilities of supervisors in a large...
Alumni donations are an essential source of revenue for colleges and universities.  Suppose administrators could determine the factors that influence increases in the percentage of alumni who donate....
 . 1 A sample space contains six sample points and events A, B, and C as shown in the Venn diagram. The probableties of the sample points are P(1) = 0.1, P(2) = 0.35, P(3) = 0.1, P(4) = 0.15, P(5) = ...
Help please!. A national study report indicated that 20.9% of Americans were identified as having medical bill financial issues. What if a news organization randomly sampled 400 Americans from 10 citi...
 . Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the survey, assume the mean annual salary for graduates 10 years after graduation is 129000 dollars. Assum...
a sample of size 8 will be drawn from a normal population with mean 63 and standard deviation 12.  Is it appropriate to use the normal distribution to find the probabilities for x̄ if appropriate fi...
6. A password must be 3, 4, or 5 characters long, and may include capital letters, lowercase letters, or digits.  How many possible unique passwords could be created? Answer (numeric: no spaces or co...
4.Assuming that everyone in a particular school has three initials, and no two students have the same three initials, what is the largest number of students that could possibly attend that school? 5. ...
Problem 7 Problem 7a At a 2 % level of significance, conduct a two-tailed test of hypothesis comparing the equality of two population means defined as follows. The first population mean relates to the...
Problem 6 At a 1% level of significance conduct a test of hypothesis to determine whether there is a significant relationship between Recode(Variable1) and Recode(Variable2), based on the twenty custo...
2. A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 6 small cities and offers the candy bar...
A deck of Yu-Gi-Oh cards has 18 different cards, each with 3 visually different versions (normal cards, secret rare cards, and holographic cards), for a total of 54 cards. 5 cards are drawn from the d...
1.  In his game on July 9, 2017, pitcher Clayton Kershaw's distribution of fastball speed was roughly normal with a mean of 92.3 mph and a standard deviation of 0.7 mph.   About what percentage of ...
A large medical study compared the results of two treatments for heart attack victims. Over a six-year period, doctors monitored 1,050 patients who were treated with angioplasty, a surgical procedure ...
asap and correct. X X 2- The president of Doerman Distributors, Inc., believes that 30% of the firm's orders come from first-time customers. A random sample of 100 orders will be used to estimate the ...
 . Number of devices 50,000 or less $75-00 50,001 — 75,000 $55-00 75.001 — 100000 $40.00 100,001 — 125.000 $28.00 125,001 or more $20.00 Table 1: Production cost and production time estimate Fi...
The time taken by a service center to repair a certain type of equipment is normally distributed with a mean of 2 hours and a standard deviation of 0.5 hours. If the service center guarantees to repai...
   . Read through the scenario below and answer the following questions. The following data set is from a survey of the weekly number of hours spent exercising for 40 high school students. Ungrouped...
 . Consider the Bayesian model 9'61; 92 N N091 + 92, 1): ai NW N(0, 1/2), 2': 1,2. 1/2 N In?) — Gamma(100,100). Suppose y = 1 is observed. Then, find the full conditional distributions of 61, 192...
this is answer for a ( please solve b c d) or c) hint  think of the fact that there are five people initially being helped, so the time for the first person to leave will be the minimum of the sum of...
I need to produce a histogram for Age, with a bin for each year based on the minimum and maximum data. I know how to make the histogram in Excel but am having trouble with the bins and what the parame...
Please show workout on EXCEL of how to calculate 19, 21, and 22. QUESTION 19 Two random samples of 40 students were drawn independently from two populations of students. Assume their aptitude tests ar...
clear and neat. Fill in the P (X=x) values to give a legitimate probability distribution for the discrete random variable X, whose possible values are -2, -1, 0, 1, and 2. Value x of X P ( X = x) -2 0...
 . The US Department of Energy reported that 45% of all homes in the US were heated by natural gas. A random sample of 303 homes in Oregon found that 152 were heated by natural gas. Test the claim th...
 . A CEO claims that men and women working for his company have equal opportunities to earn bonuses. A lawyer working on a lawsuit filed by a female employee claims that men have greater bonus opport...
I need help solving this question please  . 16. The mean of a normal probability distribution is 400 pounds. The standard deviation is 10 pounds. a. What is the area between 415 pounds and the mean o...
The basic idea behind hypothesis testing?   A has very little to do with the type of data you collected.   B is largely the same across a wide variety of statistical tests.   C depends quite a bit ...
 . Part (a) Create a table based on nhanes that only contains people under the age of 19 (i.e. 18 and younger). Call this table youth . Create a scatter plot of BMXHT (y-axis) and RIDAGEYR (x-axis). ...
 . 33. Mopeds (small motorcycles with an engine capacity below) are very popular in Europe because of their mobility, ease of operation, and low cost. The article "Procedure to Verify the Maximu...
Dr. Jones wants to test whether a finch-like bird in Hawaii is a different species from the finches found in New Zealand. Beak length is used to distinguish finches from other species of birds, so Dr....
this is answer for a ( please solve b c d)   for c) hint  think of the fact that there are five people initially being helped, so the time for the first person to leave will be the minimum of the su...
Please give the right answer here. Thank you  In "next-generation" sequencing, DNA is amplified and then processed into relatively short DNA fragments, called "reads," which are sequenced and then ma...
52 people buy tickets to a charity event at which door prizes will be given away. The organizer gives each attendee a numbered ticket. The organizer then draws a number from a box. Anyone with the mat...
The City Commission of Nashville has decided to build a botanical garden and picnic area in the heart of the city for the recreation of its citizens. The precedence table for all the activities requir...
Please find a media example containing at least two of the four: confidence intervals, sample size, sampling error,  and levels of confidence.  (Note by "media," your instructor means both print and...
Suppose that you want to maximize the objective , subject to constraint 1: , constraint 2: , and constraint 3: . You can eliminate the variable and constraint 3, but that requires changes to the objec...
A Wendy's manager performed a study to determine a probability distribution for the number of people, , waiting in a line during lunch. The results were as follows:  1.Verify that this is a discrete ...
In the following table the activities with their precedence sequence and expected time​ (days) are listed for a project on which Carl​ Betterton's construction company is​ working:    ?...
Determine whether the random variable is discrete or continuous. In each case, state the possible values of the random variable.  The number of light bulbs that burn out in the next week in a room wi...
   . Problem 1 Suppose X1, ..., Xn are iid from some population with mean / and variance o'. In this problem we are going to establish that S' = ,!, Et,(X - X) is an unbiased estimator of the popula...
Assume that a procedure yields a binomial distribution with n = 3 trials and a probability of success of p = 0.60. Use a binomial probability table to find the probability that the number of successes...
Chef needs to prepare 120 portions of steamed cauliflower each cooked portion is 3oz. The vegetable loses 28% of its weight when cooked. Raw cauliflowers costs $3.5lb how many ounces of raw cauliflowe...
The scores on an econometrics exam are distributed normally with an average score of 70 and a standard deviation of 11. If the grading curve is set so that the highest 40 percent are awarded an A and ...
Purpose : The purpose of this discussion is to understand the meaning of population, sample, descriptive and inferential.  It is also to be able to identify these vocabulary words in a case study. Po...
Men's heights are normally distributed with a mean of 69.0 inches and a standard deviation of 2.8 inches. What is the probability that a randomly selected individual man will be taller than 71.6 inche...
 . Watching TV: The 2012 general Social Survey asked a large number of people how much time they spent watching TV each day. The mean number of hours was 3.09 with a standard deviation of 2.77. Assum...
If  X  = the number of televisions in a randomly selected U.S. household, the probability distribution of  X  is given here. Here is a histogram of the probability distribution of  X :   Number ...
During last 4 months two different forecasting models resulted as below compared to actual values. Which method is more accurate using MAD? Show all work.   Month Actual Model 1 Model 2 1 25 28 34 2 ...
Have efforts to promote equality for women gone far enough in the US? A poll on this issue by the cable network CNN contacted 1019 adults. A newspaper article about the poll said, "Results have a marg...
 . ICANotes Web X My Citation list 3/8/2023 | Citat X * Chapter 13 Homework - IPGC ( X Current Jobs - Oracle Fusion C X *Homework Help - Q&A from Or x + C webassign.net/web/Student/Assignment-Res...
Q7. 10 points total The distribution of tree species in an interior BC forest is: Maple 10% Aspen 25% Fir 20% Spruce 15% Pine 30% a) If you have one (1) tree of each species, how many ways can three (...
Q5. 20 points total A box contains 24 transistors, 4 of which are defective. If 4 are sold at random, find the following probabilities. a. Exactly 2 are defective (5 points) b. None are defective (5 p...
  I am struggling deciding if ODS can or cannot be turned off? My "Little SAS Book" says ODS cannot be turned off, but I am reading online that it can. Can it, or not?. Question 1 The Output Delivery...
Q3. 20 points total An unmanned monitoring system uses high-tech video equipment and microprocessors to detect intruders. A prototype system has been developed and is in use outdoors at a weapons muni...
A study based on a sample of n = 750 recent college graduates found that the average amount of education-related debt carried by the graduating class of 2013 was x ̅ = $35,200. Assuming the populati...
 . Question 6 Which of the following is correct about the options of "PROC SORT"? Choose all that apply. NODUP removes duplicate observations on all variables. 0) Use DESCENDING keyword suc...
 . 5. What is the name of the process where each event occurs independently and with a fixed rate?< A) The Poisson Process B) The Stochastic Process C) The Branching Process D) The Martingale Proc...
ollmer Manufacturing makes three components for sale to refrigeration companies. The components are processed on two machines: a shaper and a grinder. The times (in minutes) required on each machine a...
Identify and explain the results of your study. It should provide only facts. Report the results from your statistical tests. Please organize this section and report statistics as if you would publish...
The time between the arrivals of vehicles at a particular intersection follows an exponential probability distribution with a mean of 12 seconds.   (a)What is the probability that the arrival time be...
 . Consider the following exponential probability density function. (b) Find P(x 5 2 0.4366 H (c) Find P(x 2 3 DESK! H ((1) Find P(x 5 4 0.3111 H (e) Find P(2 5 x }. (Round your answer to four decima...
 . Consider the following all-integer linear program. Max 5x + 8%2 s.t. 6x, + 5x, < 35 11x, + 4%, $ 44 1x, + 2*2 = 12 X1 x2 2 0 and integer (a) Graph the constraints for this problem. Use points t...
how to find out how 20/32= 20/38^5 = 0.0404. Back LimeSpring Logout Dashboard > MATH120 1003 Winter 2023 > M120 Module 5: Distributions of Data Luvalialice 9:41 AM Tut Jan 9 Quizzes all # 190% 0...
URGENT Please answer the question need it urgently. Problem 7.4.2 A researcher wanted to see whether there is a significant difference count mean SD in resting pulse rates for men and women. The data ...
    So, my professor sent my assignment back giving me a "0" on it claiming he can't follow what I was doing. So, I don't know if my answers were wrong, or my explanation was wrong. What I am lookin...
Are these right? . Apex Learning - Test and her friends started a club. The Venn diagram shows information about the 16 members Club JUNIORS GIRLS Malik Bob Annie Pat Javier Otto Malinda Reina Willia...
Three persons are randomly selected each year to serve as President, Vice President and Treasurer of a club. Suppose there are 15 males and 10 females in this club, all who are eligible to be selected...
What happens to the RR for unplanned extubation when a patient with a GCS score of 9 is restrained and then develops a nosocomial infection?  Why might these results be clinically significant? Articl...
I'm not sure if I did these correctly.   . Apex Learning - Test and her friends started a club. The Venn diagram shows information about the 16 members Club JUNIORS GIRLS Malik Bob Annie Pat Javier ...
Consumer Banker Association released a report showing the lengths of automobile leases for new automobiles. The results are as follows. Lease Length in Months Percent of Leases 13-24  25-36  37-48 ...
Multiple studies have found that speaking curse words can reduce the sensation of pain. A researcher learns that the mean pain score in the population is 6.0 on a 10-point scale (where 1 is the lowest...
asap and correct. The following data give the price in Euro of a ten minute call at 11am on a weekday for a local call in Ireland. The prices refer to August each year. Normal tariffs without special ...
 . Question 4, 10.1.12-T HW Score: 21.3%, 6.18 of 29 points Save CH10 02/22/23 Part 2 of 9 Points: 0.5 of 5 A bank with branches located in a commercial district of a city and in a residential area h...
1.  Discuss the broad applications of standard deviation in public or non-profit administration.  How can public and non-profit managers use standard deviation to help inform, explain, and justify t...
 . HW Score: 18.07%, 5.24 of 29 points Save Question 7, 10.2.20-T IW CH10 02/22/23 Part 2 of 8 Points: 0.36 of 4 Nine experts rated two brands of coffee in a taste-testing experiment. A rating on a 7...
Sex Sick Days Taken Age (yrs) Hrs Worked (Wkly) M 2 33 25.8 M 9 52 32.9 M 1 42 29.4 M 0 59 36.2 M 5 47 31.0 M 4 35 27.0 M 6 27 21.2 M 7 39 28.4 F 8 45 30.2 F 8 25 14.9 F 6 35 26.7 F 3 45 30.2 F 7 53 3...
 . Question 4, 10.1.12-T HW Score: 18.07%, 5.24 of 29 points Save V CH10 02/22/23 Part 2 of 9 Points: 0.5 of 5 A bank with branches located in a commercial district of a city and in a residential are...
A researcher examined number of monthly meetings (2 or 4) on job satisfaction. If the t obtained for a correlated groups t-test was 2.50, df = 3, and the t  critical = 2.353, what should s/he conclu...
 . W CH10 02/22/23 Question 2, 10.1.2-T HW Score: 18.07%, 5.24 of 29 points Part 1 of 4 & Points: 0 of 4 Save Assume that you have a sample of n, =9, with the sample mean X, = 42, and a sample st...
For the matrix from problem 5), test the population correlation between AGE and  BEDS is significantly less than zero:  Correlation between age and beds = -0.133 a) State the null and alternative hy...