Independent sample t-test

An educational psychologist studies the effect of frequent testing on retention of course material. In one of the professor's sections, students are given quizzes each week. The second section receives only two tests during the semester. At the end of the semester, both sections receive the same exam, and the scores are summarized below. Do the data indicate that testing frequency had a significant effect on performance? Use a two-tailed test at the .05 level of significance.

Frequent Quizzes Two Exams

m1 = 82 m2 = 78

n1 = 15 n2 = 15

SS1 = 100 SS2 = 110

A. Show your computations

B. Make a APA line for the t-test (including effect size - r²)

C. Paragraph answering the research question.