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A sample of 40 students enroll in a program that claims to improve scores on the

ID: 3021053 • Letter: A

Question

A sample of 40 students enroll in a program that claims to improve scores on the quantitative reasoning portion of the Graduate Record Examination (GRE). The participants take a mock GRE test before the program begins and again at the end to measure their improvement.

The mean number of points improved was . Assume the standard deviation is and let be the population mean number of points improved. To determine whether the program is effective, a test is made of the hypotheses  versus .

Compute the P-value.

Explanation / Answer


The mean number of points improved was . Assume the standard deviation is and let be the population mean number of points improved. To determine whether the program is effective, a test is made of the hypotheses  versus .

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