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Arbitron Media Research Inc. conducted a study of the iPod listening habits of men and women....

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Basic Math

Arbitron Media Research Inc. conducted a study of the iPodlistening habits of men and women. One facet of the study involvedthe mean listening time. It was discovered that the mean listeningtime for a sample of 8 men was 34 minutes per day. The standarddeviation was 19 minutes per day. The mean listening time for asample of 10 women was also 34 minutes, but the standard deviationof the sample was 7 minutes. Use a two-tailed test and at 0.02significance level, can we conclude that there is a difference inthe variation in the listening times for men and women? (Round youranswer to 3 decimal places.) The test statistic is . Decision:H0:σ21=σ22.

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