A large counseling center needs to evaluate several experimental programs. Write a paragraph summarizing the results of these tests. Did the new programs work?

a. One program is designed for divorce counseling;

the 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, and the proportion of cases that eventually ended in divorce was recorded for both. The results for random samples of couples from both programs are reported here. In terms of preventing divorce, did the new program work?

SW Sample 1 Sample 2

(Special Program) (Regular Program)

Ps10.53 Ps2 0.59 N1 78 N2 82

b. The agency is also experimenting with peer counseling for depressed children. About half of all clients were randomly assigned to peer counseling.
After the program had run for a year, a random sample of children from the new program was compared with a random sample of children who did not receive peer counseling. In terms of the percentage of children who were judged to be “much improved,” did the new program work?
236 PART II INFERENTIAL STATISTICS if it’s really working. The program publicizes unsolved violent crimes in the local media and offers cash rewards for information leading to arrests. Are “featured” crimes more likely to be cleared by arrest than other violent crimes? Results from random samples of both types of crimes are reported as follows:
Sample 1 Sample 2 (Peer Counseling) (No Peer Counseling)
Ps10.10 Ps2 0.15 N1 52 N2 56