Answered: The following table is from a…

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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The following table is from a publication. The individuals in the following table have an eye irritation, a nose irritation, or a throat irritation. They have only one of the three. Is there sufficient evidence to reject the hypothesis that the type of ear, nose, or throat irritation is independent of the age group at a level of significance equal to 0.05?

	Age (years)
Type of Irritation	18-29	30-44	45-64	65 and Older
Eye	422	560	340	54
Nose	932	1324	802	101
Throat	247	309	142	24

(a) Find the test statistic. (Round your answer to two decimal places.)

(ii) Find the p-value. (Round your answer to four decimal places.)

(b) State the appropriate conclusion.

Reject the null hypothesis. There is not significant evidence that this sample contradicts the claim of independence.Reject the null hypothesis. There is significant evidence that this sample contradicts the claim of independence. Fail to reject the null hypothesis. There is not significant evidence that this sample contradicts the claim of independence.Fail to reject the null hypothesis. There is significant evidence that this sample contradicts the claim of independence.

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