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?

SOC GER Systemwide GPA Program GPA m 2.47 2.55 s 0.70 N 35 X =

Systemwide Program m 6.137 4.78 s 1.11 N 35 X =

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

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

Math Test—Systemwide Math Test—Program m 103 106 s 2.0 N 35 X =

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 onetailed test is used, what form should the research hypothesis take? Where will the critical region begin?)