You wish to see whether guards in your prison have significantly higher levels of ethical violations comparedto similar sized correctional facilities. You randomly sample 315 guards at your prison and find that theyaveraged 2.4 ethical violations per guard, with a standard deviation of 1.0. The average for all correctionalguards across the state is 1.5 violations. Assume an alpha of .01 for this problem.a. State the appropriate null and research hypothesis, as suggested in the problemabove.b. Use the one-sample (large sample) hypothesis test to calculate Z(obtained).c. Pretend you got a Z(obtained) of +1.58 (ignore whatever you got in B above), witha Z(critical) of +2.58. How would you interpret the results?

Given: n = 315 X = 2.4 s = 1 α = 0.01 μ = 1.5 Formula Used: Test-statistic-Z = X-μsn

Answered: You wish to see whether guards in your…

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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You are testing the claim that smiling, rather than remaining neutral, during a court proceding will lead to a different punishment from the judge. A sample of 34 people who smiled during their hearing and 34 people who kept neutral facial expressions during their hearing is taken and each judgment was rated for leniency. Those who smiled (population 1) had a mean leniency rating of 4.9 with a standard deviation of 1.7, while those who did not smile (population 2) had an average leniency rating of 4.1 and standard deviation 1.5. Test the claim using a 10% level of significance. What are the correct hypotheses? Ho: Select an answerv ?V Select an answer H₂: Select an answer ?V Select an answerv Based on the hypotheses, find the following: Test Statistic = p-value = The correct decision is to Select an answer The correct summary would be: Select an answer difference in leniency when smiling over being neutral when in trouble. that there is a LeFrance, M. and Hecht, M.A., "Why Smiles…
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You are testing the claim that smiling, rather than remaining neutral, during a court proceding will lead to a different punishment from the judge.A sample of 34 people who smiled during their hearing and 34 people who kept neutral facial expressions during their hearing is taken and each judgment was rated for leniency. Those who smiled (population 1) had a mean leniency rating of 4.9 with a standard deviation of 1.7, while those who did not smile (population 2) had an average leniency rating of 4.1 and standard deviation 1.5. Test the claim using a 5% level of significance.What are the correct hypotheses?H0: Ha: Based on the hypotheses, find the following:Test Statistic = p-value = The correct decision is to .The correct summary would be: that there is a difference in leniency when smiling over being neutral when in trouble.
a. State the null and alternative hypothesis.
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