Question: A statistics class was given a pretest on probability (since many had previous experience in some other class). Then the class was given a six-page

A statistics class was given a pretest on probability (since many had previous experience in some other class). Then the class was given a six-page review handout to study for two days. At the next class they were given another test. Is there sufficient evidence that the scores improved? Use Î± = 0.05.

4 58 65 3 52 50 40 65 62 Student Pretest Posttest 52 63 68 50

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