All students who enroll in a certain memory course are given a pretest before the course begins. At the completion of

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All students who enroll in a certain memory course are given a pretest before the course begins. At the completion of the course, 10 students are selected at random and given a posttest; their scores are listed here.

Student

1

2

3

4

5

6

7

8

9

10

Before

93

86

72

54

92

65

80

81

62

73

After

98

92

80

62

91

78

89

78

71

80

 

MINITAB was used to find the 95% confidence interval for the mean improvement in memory resulting from taking the memory course, as measured by the difference in test scores (d = after -before). verify the results shown on the output by calculating the values yourself. Assume normality.

  • 8 years ago
All students who enroll in a certain memory course are given a pretest before the course begins. At the completion of
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