E Text Ch10 and 11

# E Text Ch10 and 11 - E-Text Assignment 1 E-Text Assignment...

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E-Text Assignment 1 Neil Robinson Research and Evaluation II RES 342 University of Phoenix

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E-Text Assignment 2 10.29 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 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. 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 (a) Hypothesis : H0 µ1 µ2 : > H1 µ1 µ2 t-Test: Two-Sample Assuming Unequal Variances Internationa l Domesti c Mean 48.6 36.1333 3333 Variance 141.3777778 20.9809 5238 Observations 10 15 Hypothesized Mean Difference 0 df 11 t Stat 3.162813923 P(T<=t) one-tail 0.004516765 t Critical one-tail 1.795884814
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E Text Ch10 and 11 - E-Text Assignment 1 E-Text Assignment...

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