Recall the study in Exercise 8.3.21 on which days of the week people experienced heart attacks. Another subgroup the researchers looked at were those who were not employed. They found that the 1,191 heart attack victims had heart attacks distributed as shown in the following table. They wanted to know whether or not heart attacks are distributed evenly across the days of the week in this population. Test as follows: 

a. State the hypotheses in words or in symbols. 

b. Calculate the test statistic, and p-value. 

c. State your conclusion in the context of the research question 

d. Compare your conclusion to that in Exercise 8.3.21. Did your conclusions differ? If so, why do you think this happened?

Data from Exercise 8.3.21

A study done in Germany (Willich et al., 1993) looked at which days of the week people had heart attacks. One subgroup the researchers looked at were those who were employed. They found that the 884 heart attack victims had heart attacks distributed as shown in the following table. They wanted to know whether heart attacks are distributed evenly across the days of the week in the long run. Test as follows.

Transcribed Image Text:

Day Number of heart attacks Sun Mon Tue Wed Thu Fri Sat 168 180 157 169 180 169 168