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T-test Steps

Is it harder to get into graduate programs in psychology or history? We randomly selected five institutions from among all U.S. institutions with graduate programs. The first number for each is the minimum GPA for applicants to the psychology doctoral program, and the second is for applicants to the history doctoral program. These GPAs were posted on the Web site of the well-known college guide company Peterson's.

Wayne State University: 3.0, 2.75
University of Iowa: 3.0, 3.0
University of Nevada-Reno: 3.0, 2.75
George Washington University: 3.0, 3.0
University of Wyoming: 3.0, 3.0

a. The participants are not people; explain why it is appropriate to use a paired-samples t test for this situation.
b. Conduct all six steps of a paired-samples t-test. Be sure to label all six steps.
c. Report the statistics as you would in a journal article.

Solution Preview

a. The participants are not people; explain why it is appropriate to use a paired-samples t test for this situation.

The two GPAs are related by the same university. So, it is appropriate to use a paired-samples t test for this situation.

b. Conduct all six steps of a paired-samples t-test. Be sure to ...

Solution Summary

T-test steps for graduate programs are examined.

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