Question: A marriage counselor administered a test designed to measure overall contentment to 30 randomly selected married couples. The scores for each couple are given below. A higher number corresponds to greater contentment or happiness.
a. Test, at the 1% level of significance, the hypothesis that on average men and women are not equally happy in marriage.
b. Test, at the 1% level of significance, the hypothesis that on average men are happier than women in marriage.