Question: Hypothesis: A weekend seminar in assertiveness training increases the assertiveness of the female participants. A random sample of 90 female university students is selected. Each woman is first evaluated for assertiveness by specially trained interviewers. In that pre-test, 25 are judged to be assertive and 65 nonassertive. All the women then attend a weekend seminar in assertiveness training. At the end of the weekend, each woman is again interviewed and evaluated. In the post-condition, 60 of the women are judged to be assertive and 30 nonassertive. The data table, with marginal totals, follows:

POST

Nonassertive Assertive Total

Assertive 10 15 25

PRE

Nonassertive 20 45 65

30 60 90

Test the hypothesis.