Chapter 13, Problem 39CRE

Ages of Married Couples You have date on the ages of both partners in a random sample of married couples and want to find out whether husbands tend to be older than their wives. There are 15 married couples in your sample. Which test(s) can you use? Answer for each circumstance.

a. Assume that the distributions of ages are Normal.

b. Assume that the distributions of ages for both men and women are not Normal, and assume that the distribution of differences in age for each couple is not Normal.

c. Assume the distributions of ages are not Normal for both men and women, but assume that the distribution of differences in age is Normal.