SOLUTION: Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumpt
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Question 1158034: Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the data to construct a 99% confidence interval estimate of mu, the mean duration of game play.
4057
3882
3863
4032
4321
4811
4653
4028
5001
4816
4325
4316
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
the 99%CI is x bar +/- t (0.995, df=11)*s/sqrt(n), where n=12
t=3.106
x bar=4342.08
s=392.43
half-interval is 351.96
(3990.12, 4694.04) is 99% CI of the true mean or (3990, 4694)
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