solution

One question in a recent General Survey asked, “Do you think that it should be government’s responsibility to provide secondary level education to the poor?” Those answering yes included 85 of the 155 subjects who called themselves strong supporters of Party A in political party identification and 24 of the 110 who called themselves strong supporters of Party B.

(a) Find the point estimate of the population proportion who would answer yes for each group

(b) The 95% confidence interval for the population proportion of yes responses is (0.47, 0.63) for strong supporters of Party A and (0.14, 0.29) for strong supporters of Party B. Explain how to interpret the intervals.