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Description: Randomly selected birth records were obtained, and categorized as listed in the table to the right. Use a 0.01 significance level to test the reasonable claim that births occur with equal frequency on the different days of the week. How might the ap

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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Randomly selected birth records were obtained, and categorized as listed in the table to the right. Use a 0.01 significance level to test the reasonable claim that births occur with equal frequency on the different days of the week. How might the apparent lower frequencies on Saturday and Sunday be explained?

Day	Sun	Mon	Tues	Wed	Thurs	Fri	Sat
Number of Births	42	64	63	62	55	63	42

Calculate the test statistic, χ2.

Calculate the P-value.

What is the conclusion for this hypothesis test?

Expert Solution

Step 1

Birth records on different days are obtained as follows

day	Sun	Mon	Tue	Wed	Thus	Fri	Sat
No. of births	42	64	63	62	55	63	42

Total number of births N = 42+64+63+62+55+63+42 = 391

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