In order to determine whether or not a driver\'s education course improves the s

Question

In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of 6 students were given the exam before and after taking the course. The results are shown below.Let d = Score After - Score Before.
Student Score before Course Score after course
1 83 87
2 89 88
3 93 91
4 77 77
5 86 93
6 79 83

a. Compute the test statistic.
b. At 95% confidence using the p-value approach, test to see if taking the course actually increased scores on the driving exam.

Explanation / Answer

Group Before After Mean 84.50 86.50 SD 6.06 5.79 SEM 2.47 2.36 N 6 6 The test hypothesis is Ho:dbar=0 Ha:dbar

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