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Question 243:

Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's flights on the same day. (a) At α = .05, is the mean weight of an (a) At α = .05, is the mean weight of an international bag greater? Show the hypotheses, decision rule, and test statistic. (b) At α = .05, is the variance greater for bags on an international flight? Show the hypotheses, decision rule, and test statistic.
Luggage
International (10 bags) Domestic (15 bags)
39 47 29 37 43
54 48 36 33 42
46 28 33 29 32
39 54 34 43 35
69 62 38 39 39

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