The results of a Newsweek poll concerning views on abortion showed that of n = 1002 adults, 39% favored the right-to-life stand while 53% were pro-choice. The poll reported a margin of error of plus or minus 3%.
a. Construct a 90% confidence interval for the proportion of adult Americans who favor the right-to-life position.
b. Construct a 90% confidence interval for the proportion of Americans who favor the pro-choice position.