Recall Exercise 8.1.12 about whether different generations view marriage differently. The corresponding data are available in the file MarriageViews.

a. State the appropriate null and alternative hypotheses in words.
b. Explain why it would be okay to use the theory-based method to find a p-value for this study.
c. Use an appropriate applet (for example, the Multiple Proportions applet) to find and report the following from the data.
• The name of the statistic and its numeric value
• The theory-based p-value
d. Comment on the strength of evidence based on the p-value.
e. Comment on causation and generalization. Be sure to explain how you are arriving at your conclusion.
f. Use an applet to fi nd and report a set of confidence intervals appropriate for the context. Also, interpret the confidence intervals in the context of the study.

Data form 8.1.12

A Gallup poll conducted in 2013 examined whether there is an association between church attendance and smoking status among American adults. The following table reports the percentage of people who classify themselves as smokers, conditional on self-described level of church attendance.