The categories of a categorical variable are given along with the observed counts from a sample. The expected counts from a null hypothesis are given in parentheses. Compute the χ2-test statistic, and use the χ2-distribution to find the p-value of the test.CategoryABCDObserved (Expected)47 (40)73 (80)108 (120)172 (160)Round your answer for the chi-square statistic to two decimal places, and your answer for the p-value to four decimal places.chi-square statistic =_____________p-value =________

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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The categories of a categorical variable are given along with the observed counts from a sample. The expected counts from a null hypothesis are given in parentheses. Compute the χ2-test statistic, and use the χ2-distribution to find the p-value of the test.

Category	A	B	C	D
Observed (Expected)	47 (40)	73 (80)	108 (120)	172 (160)

Round your answer for the chi-square statistic to two decimal places, and your answer for the p-value to four decimal places.

chi-square statistic =_____________

p-value =________

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