The Pew Research Center recently polled n=1028 U.S. drivers and found that 71% enjoyed driving their automobiles.

A. Construct a 95% confidence interval for the proportion of U.S. drivers who enjoy driving their automobiles.

B. In 1991, a Gallup Poll reported this percent to be 79%. Using the data from this poll, test the claim that the percent of

drivers who enjoy driving their cars has declined since 1991. Use a 5% significance level.