Calculate the chi-square test of independence and interpret the results in terms of the study.

1) Tkach and Yelverton hypothesized that men and women use different strategies to maintain happiness. They surveyed 250 men and 250 women and asked which of the following three strategies they used to maintain happiness (participants had to choose only one): friends, exercise, or academic accomplishments. Among the men, 50 indicated friends, 80 indicated exercise, and 120 indicated academic accomplishments. Among the women, 130 indicated friends, 50 indicated exercise, and 70 indicated academic accomplishments.