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Arbitron Media Research Inc. conducted a study of the iPod listening habits of m

ID: 3082390 • Letter: A

Question

Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women. One facet of the study involved the mean listening time. It was discovered that the mean listening time for men was 29 minutes per day. The standard deviation of the sample of the 10 men studied was 12 minutes per day. The mean listening time for the 12 women studied was also 29 minutes, but the standard deviation of the sample was 18 minutes. At the .10 significance level, can we conclude that there is a difference in the variation in the listening times for men and women? (Round your answer to 3 decimal places.) What is the test statistic? t=?

Explanation / Answer

Ho: u(men)-u(women) = 0 H1: u(men)-u(women) is not 0

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