11. Carbon monoxide: A recent study examined the effects of carbon monoxide exposure on agroup of construction workers. The following table presents the numbers of workers whoreported various symptoms, along with the shift (morning, evening, or night) that they worked.ShiftMorningEveningNightInfluenza161318Headache24336.Weakness1116Shortness9.9.of BreathSource: Journal of Environmental Science and HealthA39:1129–1139a. Compute the expected frequencies under the null hypothesisb. Compute the value of the chi-square statistic.c. How many degrees of freedom are there?d. Test the hypothesis of independence. Use the x==0.02 level of significance. What do youconclude?

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Answered: a. Compute the expected frequencies…

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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a. Compute the expected frequencies under the null hypothesis b. Compute the value of the chi-square statistic. c. How many degrees of freedom are there?