Question

An educational psychologist studies the effect of frequent testing on retention of class material. In one section of an introductory course (Group A), students are given quizzes each week. A second section of the same course (Group B) receives only two tests during the semester. At the end of the semester, both sections receive the same final exam, and the scores are summarized below. Group A - Frequent Testing Section: ---------------------------------------- Average Final Exam Score = 95 Variance = 17 n = 36 Group B - Two Tests ----------------------- Average Final Exam Score = 84 Variance = 11 n = 27 Calculate and report the value of the appropriate test statistic to two decimal places