Answered: (among data miners) that there is 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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There is a popular story (among data miners) that there is a correlation between men buying diapers and buying beer while shopping. A student tests this theory by surveying 131 male shoppers as they left a grocery store. The results are summarized in the contingency table. Test for a dependent relationship between buying beer and buying diapers. Conduct this test at the 0.01 significance level.

	Bought Diapers	Did Not Buy Diapers	Totals
Beer	8	49	57
No Beer	10	64	74
Totals	18	113	131

(a) Find the expected frequencies.

	Bought Diapers	Did Not Buy Diapers
Beer
No Beer

(b) Find the test statistic.

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