Question 278134: Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's flights on the same day. At .05, is the mean weight of an international bag greater? Show the hypotheses, decision rule, and test statistic.
International Bag (10 bags)
39 47
54 48
46 28
39 54
69 62
Domestic (15Bags)
29,36,33,34,38,37,33,29,43,39,43,42,32,35,39
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Examine the data below showing the weights (in pounds) of randomly selected checked bags for an airline's flights on the same day. At .05, is the mean weight of an international bag greater? Show the hypotheses, decision rule, and test statistic.
International Bag (10 bags)
39 47
54 48
46 28
39 54
69 62
Domestic (15Bags)
29,36,33,34,38,37,33,29,43,39,43,42,32,35,39
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I ran a 2-Sample Ttest and got the following data:
Ho : u(int)-u(dom) <= 0
Ha : u(int)-u(dom) > 0
----
test statistic: t = 3.1628
critical value: +-invT(0.975,11) = 2.201
p-value = 0.0046
df = 10.80
u(int) = 48.6
u(dom) = 36.13
s(int) = 11.89
s(dom) = 4.58
----
Conclusion: Since the p-value is less than 5%, reject Ho
The average International luggage is heavier than average Domestic luggage.
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Cheers,
Stan H.
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