Chapter 9.4, Problem 25E

For Exercises 7 through 27, perform these steps.

a. State the hypotheses and identify the claim.

b. Find the critical value(s).

c. Compute the test value.

d. Make the decision.

e. Summarize the results.

Use the traditional method of hypothesis testing unless otherwise specified.

25. Coupon Use In today’s economy, everyone has become savings savvy. It is still believed, though, that a higher percentage of women than men clip coupons. A random survey of 180 female shoppers indicated that 132 clipped coupons while 56 out of 100 men did so. At α = 0.01, is there sufficient evidence that the proportion of couponing women is higher than the proportion of couponing men? Use the P-value method.