Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's fights on the same day.
(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 fight? Show the hypotheses, decision rule, and test statistic.

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International (10 bags) Domestic (15 bags) 29 36 39 47 48 28 54 37 43 46 39 69 34 38 29 43 39 32 35 39