Are the congregations conservative? The study described in the previous exercise also asked each respondent to classify his or her congregation according to theological orientation. For this question, 707 out of 1191 congregations were classified as “more conservative.” Using the questions in the previous exercise as a guide, analyze and interpret these data. Compare your answers to parts

(c) and

(d) in the two exercises and discuss reasons why you think the answers should be similar or different.

8.29 Student credit cards. In a survey of 1430 undergraduate students, 1087 reported that they had one or more credit cards.13 Give a 95% confidence interval for the proportion of all college students who have at least one credit card.