In 1895, druggist Asa Candler began distributing handwritten tickets to his customers for free glasses of Coca-Cola at his soda fountain.That was the genesis of the discount coupon. In 1975 it was estimated that 69% of U.S. consumers regularly used discount coupons when shopping. In a 1995 consumer survey, 71% said -- -

they regularly redeem coupons (Newark Star-Ledger, Oct. 9, 1995). Assume the 1995 survey consisted of a random samplc of 1,000 shoppers.

a. Does the 1995 survey provide sufficient evidence that the percentage of shoppers using cents-off coupons exceeds 69%? Test using a = .05.

b. Is the sample size large enough to use the inferential procedures presented in this section? Explain.

c. Find the observed significance level for the test you conducted in part

a, and interpret its value.