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10. To test whether a college course is working a pre- and post-test is arranged for the students. The results are given below. Compare the scores with a t-test as indicated. Use α 0.05 to test the claim. Use the 5-step method. a) Assuming the scores are randomly selected from the two groups. Assume equal variances. b) Assume that the scores are pairs of scores for ten students Test Pre-test Post-test 56 8874 64 83 Scores 60 68 57 58 53 72 50 62 64 74 66v 60 65 67

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