Pond's Age-Defying Complex, a cream with alphahydroxy acid, advertises that it can reduce wrinkles and improve the skin. In a study published in Archives of Dermatology (June 1996), 33 women over age 40 used a cream with alpha-hydroxy acid for twenty-two weeks.

At the end of the study period, 23 of the women exhibited skin improvement (as judged by a dermatologist).

a. Is this evidence that the cream will improve the skin of more than 60% of women over age 40? Test using a = .05.

b. Find and interpret the p-value of the test.