QUESTION 3A survey of 64 popular restaurants is used to estimate the mean number of kitchen employees. Assume that the number of kitchen employees isright-skewed, which distribution should be used to construct the confidence interval?Neither standard normal distribution nor t distributiont distribution with 63 degrees of freedomStandard normal distributiont distribution with 64 degrees of freedom

Given that the data is right skewed. That means it is not symmetric. So normal distribution can not…

Answered: QUESTION 3 A survey of 64 popular…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What are the critical values for a two-tailed test with a 01 level of significance when the population standard deviation is known? Multiple Choice Above 1.960 and below -1960 Above 1.645 and below -1645 Above 2.576 and below -2.576 Above 1.000 and below -1.000 Next> 5 of 10 Prev < earch
nstructor-created question Question Help ▼ In a test of the effectiveness of garlic for lowering cholesterol, 81 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of LDL cholesterol (in mg/dL) have a mean of 0.8 and a standard deviation of 20.8. Use a 0.01 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. What do the results suggest about the effectiveness of the garlic treatment? Assume that a simple random sample has been selected. Identify the null and alternative hypotheses, critical value, test statistic, and state the final conclusion that addresses the original claim. What are the null and alternative hypotheses? O A. Ho: H=0 mg/dL O B. Ho: µ>0 mg/dL H: uz0 mg/dL H1: µ0 mg/dL Use the t-table to determine the critical value. (Round to three decimal places as needed.) Determine the test statistic. |(Round to…
Applying the Empirical Rule A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell-shaped and has a mean of 53 months and a standard deviation of 10 months. Using the Empirical Rule, what is the approximate percentage of cars that remain in service between 23 and 43 months?Do not enter the percent symbol.
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A p-value smaller than the significance level, a means.... O the statistic is unlikely/unusual/unexpected in the distribution O the statistic is likely/usual/expected in the distribution
Assum a sample is used to estimate a populatation mean. Find the 95% confidence interval for a sample size of 41 with a mean of 64.2 and a standard deviation of 13.4. Enter answer as an open interval (i.e. parentheses) accurate to 3 decimal places.
Applying the Empirical Rule A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and other features. The distribution of the number of months in service for the fleet of cars is bell- shaped and has a mean of 61 months and a standard deviation of 6 months. Using the Empirical Rule, what is the approximate percentage of cars that remain in service between 73 and 79 months? Do not enter the percent symbol.
What is the estimated standard error for a paired sample t test using the following data: Standard deviation of the difference score = 5 and n=100?
Independent random samples of newly completed apartments in four regions of a country yielded the data on monthly rents, in dollars, given to the right. At the 5% significance level, do the data provide sufficient evidence to conclude that a difference exists in mean monthly rents among newly completed apartments in the four regions? Region Rent Northeast 1011 909 943 1153 1220 Midwest South West Click here to view page 1 of the F-distribution. Click here to view page 2 of the F-distribution. Click here to view page 3 of the F-distribution. Click here to view page 4 of the F-distribution. Now conduct a one-way ANOVA test on the data. What is the F-statistic? F= = (Round to two decimal places as needed.) Determine the critical value. Fα = =(Round to two decimal places as needed.) 878 785 718 802 731 599 890 657 830 1047 1010 1027 1076 904 1233 Since the F-statistic in the rejection region, evidence to conclude that the population means are not all the same. Ho. The data Time Remaining:…
A study was conducted to measure the e ectiveness of hypnotism in reducing pain. Themeasurements are centimeters on a pain scale before and after hypnosis.Assume that the paired sample data are simple random samples and that the di erenceshave a distribution that is approximately normal. Use a 0:10 signi cance level to testthe claim that the the hypnotism is e ective in reducing pain.test statistic = ?1:868431982; p-value = 0:0519584292

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