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 127 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 0.05 significance level. Beer No Beer Bought Diapers Did Not Buy Diapers Totals 48 55 62 72 7 10

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 24PFA
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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 127 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 0.05 significance level.
Beer
No Beer
Totals
Bought Diapers Did Not Buy Diapers Totals
48
55
62
72
110
127
7
10
17
(a) Find the expected frequencies.
Bought Diapers Did Not Buy Diapers
Beer
No Beer
(b) Find the test statistic.
(c) Find the critical value.
Transcribed Image Text: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 127 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 0.05 significance level. Beer No Beer Totals Bought Diapers Did Not Buy Diapers Totals 48 55 62 72 110 127 7 10 17 (a) Find the expected frequencies. Bought Diapers Did Not Buy Diapers Beer No Beer (b) Find the test statistic. (c) Find the critical value.
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