Answered: It is believed that the standard…

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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It is believed that the standard deviation of percentage of jobs gained in the first quarter after a recession is 1.2%. A Bureau of Labor Statistics employee conducts a hypothesis test at the 0.05 level of significance on this claim using a large sample, where the value of the chi square test statistic reveals they should perform a left-tailed test on the claim; they find that the P-value is 0.0003.

Select the most appropriate conclusion from this test.

A. There is not sufficient evidence to suggest that the standard deviation of percentage of jobs gained is less than 1.2%.

B. There is significant evidence to suggest that the standard deviation of percentage of jobs gained is less than 1.2%.

C. There is significant evidence to suggest that the standard deviation of percentage of jobs gained is not 1.2%, and in fact, it is probably lower.

D. There is not sufficient evidence to suggest that the standard deviation of percentage of jobs gained is not equal to 1.2%.

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