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Fifty Members of a Bowling League Sign Up for a Program

Question 57
Multiple Choice
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Multiple Choice

Fifty members of a bowling league sign up for a program that claims to improve bowling scores. The participants bowl a set of five games before the program begins and a set of five games again at the end to measure their improvement. The mean number of points improved (over the set of five games) was xˉ=10\bar { x } = 10 . Assume th standard deviation is σ=56\sigma = 56 and let μ\mu be the population mean number of points improved for the set of five games. To determine whether the program is effective, a test is made of the hypotheses H0:μ=0H _ { 0 } : \mu = 0 versus H1:μ>0H _ { 1 } : \mu > 0 .
Compute the value of the test statistic.

A) 1.261.26
B) 0.180.18
C) 0.10380.1038
D) 9.459.45

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