Question

1. A large counseling center needs to evaluate a new experimental program designed for divorce counseling. A key feature of the program is its counselors, who are married couples working in teams. About half of all clients have been randomly assigned to this special program and half to the regular program. The proportion of cases that eventually ended in divorce are recorded for both. The results for random samples of couples from both programs are reported below. In terms of preventing divorce, would instituting the new program result in fewer divorces?

Sample 1 (Special Program)	Sample 2 (Regular Program)
P1 = 0.53	P2 = 0.59
N1 = 78	N2 = 82

1. state the research and null hypotheses    
2. compute either the z- or t-statistic
3. decide whether to use a one-tailed or two-tailed test
4. determine the p-value for the hypothesis test
5. decide whether there is evidence to reject the null hypothesis (use a=0.05)

Answer 1

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