A school system has assigned several hundred

“chronic and severe underachievers” to an alternative educational experience. To assess the program, a random sample of 35 has been selected for comparison with all students in the system.

a. In terms of GPA, did the program work?

Systemwide GPA Program GPA m  2.47

2.55 s
0.70 N
35

b. In terms of absenteeism (number of days missed per year), what can be said about the success of the program?

Systemwide Program m
6.137

4.78 s
1.11 N
35

c. In terms of standardized test scores in math and reading, was the program a success?

Math Test– Math Test–

Systemwide Program m
103
106 s
2.0 N
35 Reading Test– Reading Test–

Systemwide Program m
110
113 s
2.0 N
35

(HINT: Note the wording of the research questions. Is a one-tailed test justified? Is the program a success if the students in the program are no different from students systemwide? What if the program students were performing at lower levels? If a one-tailed test is used, what form should the research hypothesis take? Where will the critical region begin?)