Answered: Use a hypothesis test to test the given…

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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Question

Use a hypothesis test to test the given claim.
A test of sobriety involves measuring the subject's motor skills. Twenty randomly selected sober subjects take the test and produce a mean score of 41.0 with a standard deviation of 3.4. At a significance level of 0.01, test the claim that the true mean score for all sober subjects is equal to 39.0.

Choose the best asnwer below:

A. Reject the null hypothesis of μ = 39.0 with a P-value of 0.00823. B. There is strong evidence that the true mean score for sober subjects is not 39.0.

C. Fail to reject the null hypothesis of μ = 39.0 with a P-value of 0.01647. There is not sufficient evidence that the true mean score for sober subjects is different from 39.0.

D. Reject the null hypothesis of μ = 39.0 with a P-value of 0.01647. There is sufficient evidence that the true mean score for sober subjects is different from 39.0.

E. There is not enough information to perform the test.

F. Fail to reject the null hypothesis of μ = 39.0 with a P-value of 0.02647. There is not sufficient evidence that the true mean score for sober subjects is different from 39.0.

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