Recall Exercise 8.2.2 on where students live and whether they regularly drink coffee. The results of the survey are shown in the mosaic plot. Which of these would you predict to be the findings if a chisquare test of significance was done on these data? 

A. Because the conditional proportions of coffee drinkers are all about the same for the three conditions, we would probably get a small chi-square statistic and a small p-value. 

B. Because the conditional proportions of coffee drinkers are all about the same for the three conditions, we would probably get a small chi-square statistic and a large p-value. 

C. Because the proportions of those that live off campus is much smaller than the other two conditions, we would probably get a large chi-square statistic and a small p-value. 

D. Because the proportions of those that live off campus is much smaller than the other two conditions, we would probably get a small chi-square statistic and a large p-value.

Data from Exercise 8.2.2

Partial results of a survey of college students, in which they were asked where they live (dorm, college apartment, or off campus) and whether they regularly drink coffee are shown in the following table. If there were no association between where they live and coffee drinking, what would be the expected count in the cell for those that live in a dorm and regularly drink coffee?

Transcribed Image Text:

Percentage 100 80 60 40 20 0 No Yes Dorm No Yes Off campus Residence No Yes Apt