Suppose the fuel efficiency, in miles per gallon, of a certain model of car is normally distributed. For a random sample of cars of that model, the confidence interval (28.5, 34.2) is generated. Find the margin of error.(round to one decima)

Q: Suppose x has a distribution with ? = 20 and ? = 17.   (a) If a random sample of size n = 37 is…

A: Mean μ=20 Population standard deviation σ=17

Q: Can you please do psychology major?

A: Topic: Relationship between hours of sleep and stress levels in college students

Q: Match the following parameters to their description (I

A: Population mean: μ Population standard deviation: σ Population units: N Sample mean: x¯ Sample…

Q: a) What distribution does X follow? b) What is the probability that you see 19 walnut trees in an…

A: Here  In large forest wall nut tree appears at random on average 22 trees per acre... And X is numer…

Q: Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1176 adults, 85% said that…

A: p=95%, n=1176, p^=85%

Q: Ages Number of students 15-18 3 19-22 7 23-26 10 27-30 5 31-34 5 35-38 5 Based on the frequency…

A: Ages Number of students 15-18 3 19-22 7 23-26 10 27-30 5 31-34 5 35-38 5

Q: A random sample of 171 marketing students was asked to rate, on a scale from 1 (not important) to 5…

A: From the provided information, Sample size (n) = 171 Sample mean (x̄) = 3.07 Sample standard…

Q: What type of test would we run on the HRs.per.week variable?

A: To identify the type of the test.

Q: Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or…

A: As per the Bartleby guildlines we have to solve first three subparts and rest can be reposted.....…

Q: there is no work shown how to get standard deviation or Variance  if I could have my questions back…

A: Answer:- Given, 28%  of U.S. employees who are late for work blame oversleeping. That is,…

Q: Suppose that a diagnostic test has been shown to be 80% effective in detecting a genetic abnormality…

A: a. Suppose p is the true detection rate of abnormality.

Q: Use the t-distribution and the sample results to complete the test of the hypotheses. Use a 5 %…

A: Population mean = 4 Sample mean = 4.8 Sample standard deviation = 2.3 Sample size = 15 significance…

Q: dresses the original claim. Use the P-value method and the normal distribution as an appr What are…

A: Sample size n =404 Favorable cases x =154 Sample proportion p^=x/n  =154/404 =0.3812

Q: Use StatKey or other technology to generate a bootstrap distribution of sample proportions and find…

A: Answer  Given  Proportion= 0.257 sample size = 47

Q: Annual retail store revenue for a technology company from 2007 to 2017 are shown below. Year Period…

A: Given data:

Q: Suppose you are interested in seeing whether the total number of days students are absent from high…

A: X = the total number of absences  Y = the average grades n 80 ∑x  380 ∑y 5820 ∑x2  2708…

Q: Management at Deluxe Diner is in process of establishing a quality control system for the time it…

A: Sample size n = 3x¯¯=100R¯=40We have to find the 3σ UCL for the x¯-chart.

Q: Aerated Lagoon. Conductivity measurements (umho/cm) were taken at four different locations in the…

A: Null hypothesis :  There is no significant difference between groups * Mixture is homogeneous…

Q: Independent random samples of professional football and basketball players gave the following…

A: Since you have posted multiple questions, we will provide the solution only to the first question as…

Q: The mean daily production of a herd of cows is assumed to be normally distributed with a mean of 36…

A: Answer: From the given data, mean (μ) = 36 Standard deviation(σ) = 13.9

Q: Use the report to estimate the model.

A: From the given table, constant term is 12718. Coefficient of xt is 0.4405 Coefficient of Yt-1 is…

Q: A consumer advocacy group is doing a large study on car rental practices. Among other things, the…

A: Given,population standard deviation(σ)=700margin of error(E)=135α=1-0.99=0.01α2=0.005Z0.005=2.576…

Q: 9. Describe the distribution in the histograms below and match them to the boxplots. 50 (a) 70 50…

A: Consider the box plot given below: The value (represented through a bold horizontal line) that…

Q: Is this p-value significant at the 10% significance level? Is it significant at the 5% significance…

A: The 95% confidence interval is given as: (0.061,0.109). The 90% confidence interval is given as:…

Q: (e) Use the F test to test the hypotheses in part (d) at a 0.05 level of significance. Present the…

A: Given  x Y 3 55 12 40 6 55 20 5 14 15

Q: How tall? The heights of young men follow a Normal distribution with mean 69.3 inches and standard…

A: It is given that: For the distribution of height (specified to be normally distributed) of men (in…

Q: The amount of time adults spend watching television is closely monitored by firms because this helps…

A: The mean of the sampling distribution is, μx¯=μ The standard deviation of the sampling distribution…

Q: e. Compute the Durbin-Watson statistic. D= (Round to two decimal places as needed.)

A: Month Crude oil Gasoline 1 74 1.413 2 74 1.714 3 76 1.571 4 75 1.889 5 75 1.642 6 75…

Q: Consider a list of data points with the following stats:    n = 15 min = -5 max = 15 mean =…

A: The IQR based limits to detect the outliers are: Upper limit = Q3 + 1.5 * IQR = 7.5 + 1.5 * 4.5 =…

Q: Townson College found that 40% of its students withdraw without completing the introductory…

A: Given thatp = 0.40n = 18X ~Binomial(n, p) X ~ Binomial (18, 0.40)The PMF of the Binomial…

Q: The stepwise regression approach takes into consideration all possible models. True O False

A: It is required to identify whether the given statement is true or false.

Q: What type of test would we run on the HRs.per.week variable? Single sample t-test Single sample…

A: It is required to identify the correct choice of test to be run on the variable HRs.per.week.

Q: Management at Deluxe Diner is in process of establishing a quality control system for the time it…

A: Sample size n = 3x¯¯=100R¯=40We have to find the 3σ UCL for the R-chart.

Q: Question 1 The following is the quadratic regression equation for a sample of n = 25: Y; = 5 + 3X1 +…

A: The quadratic regression equation for a sample n=25 Yi^=5+3X1i+1.5X1i2

Q: Consider a stock portfolio consisting of two units of S¹ and one unit of S². Calculate the…

A: This question involves calculating the probability of delta losses over one day for a stock…

Q: The expected value is $

A: Suppose a life insurance company sells a $270,000 one-year term life insurance policy to a…

Q: Refer to the gasoline sales time series data in the given table.   Week Sales (1,000s of gallons)…

A: the gasoline sales time series data in the given table. Week Sales (1,000s of gallons) 1 17 2…

Q: Which of the following are true about regression with one predictor variable (often called "simple…

A: Which of the following are true about regression with one predictor variable (often called "simple…

Q: A random sample of size n = 120 is taken from a population with a population proportion p = 0.61. a.…

A: The given sample size is 120 and population proportion is 0.61.

Q: Suppose the fuel efficiency, in miles per gallon, of a certain model of car is normally distributed.…

A: Given:          Lower bound =11.1          Upper bound =13.1

Q: 12) Selecting which seven players will be in the batting order on a 11 person team.

A: Permutation: Permutation of the objects means the arrangement of the object in a specific order.…

Q: (a) Draw a relative frequency histogram with lower class limit of the first class equal to 0 and…

A: Waiting Time 8 11 27 32 45 52 6 6 7 6 2 9 8 8 6 5 5 9 4 5…

Q: 10) 5 out of 13 students will ride in a car instead of a van

A: Total number of students, n=13 Number of choosing students from the set, r=5

Q: Test the hypothesis that the true average hours worked per week is not equal to 55. What is the…

A: The data is given on the Student_Data_BUS. Sample size (n) = 28 Let μ be the population mean hours…

Q: How is a confidence level determined? It is selected O It is calculated depending on which test…

A: The confidence level in statistics denotes the likelihood that an estimate of the location of a…

Q: dent-resources/sta-296-datasets. hus Cancer 81 461 20 450 246 166 63 64 155 859 151 166 37 223 138…

A: Part(1): Given that,  Patients with advanced cancers of the stomach, bronchus, colon, ovary, and…

Q: Find the value of the test statistic. W = 75.50 X Find the p-value. (Round your answer to four…

A: Given information: Public Accountant  Financial Planner 51.2 50 59.8 49.2 56.3 54.1 58.2…

Q: Y Hotpot stoves use a standard oven insulation. To test its effectiveness they take random samples…

A: One type of non-parametric test is the Mann-Whitney U test. When there exist two samples which are…

Q: On average, the fasting blood glucose for pregnant women is 80 with a standard deviation of 10. What…

A: μ=80σ=10 Let X be the fasting blood glucose level of  pregnant women.

Q: Suppose we have a 95% confidence interval estimate of the population proportion p is   0.678 p <…

A: 95% confidence interval for p :  0.678 &lt; p &lt; 0.788   we have to find point estimate for p.