SOC 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

µ = 2.47 X — = 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

µ = 6.137 X — = 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—

Systemwide Math Test—

Program

µ = 103 X — = 106 s = 2.0 N = 35 Reading Test—

Systemwide Reading Test—

Program

µ = 110 X — = 113 s = 2.0 N = 35

(HINT: Note the wording of the research questions. Is a one-tailed test justifi ed? 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? )