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Forty-Two Members of a Bowling League Sign Up for a Program

Question 55
Multiple Choice
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Multiple Choice

Forty-two 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=9\bar { x } = 9 . Assume the standard deviation is σ=70\sigma = 70 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 PP -value.

A) 0.05060.0506
B) 0.20240.2024
C) 0.83320.8332
D) 0.10120.1012

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