Question: The statistics department at a large university instituted a program in which students could get extra help with statistics in the evening. The following table

The statistics department at a large university instituted a program in which students could get extra help with statistics in the evening. The following table presents scores for tests taken before and after the program for a random sample of six students. Student 1 2 3 4 5 9 Before 67 58 78 61

Construct a 99% confidence interval for the mean increase in test score.

Student 1 2 3 4 5 9 Before 67 58 78 61 75 80 After 73 66 85 69 69 50 80 82

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