Discuss the below:
Q1 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. Luggage
International Domestic
(10 bags) (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
Q2 Mean output of solar cells of three types are measured six times under random light intensity over a period of 5 minutes, yielding the results shown. Research question: Is the mean solar cell output the same for all cell types? SolarWatts
Solar Cell Output (watts)
Cell Type Output (watts)
A 123 121 123 124 125 127
B 125 122 122 121 122 126
C 126 128 125 129 131 128
Q3 Employees of Axolotl Corporation were sampled at random from pay records and asked to complete an anonymous job satisfaction survey, yielding the tabulation shown. Research question: At α = .05, is job satisfaction independent of pay category? Employees 688 Applied Statistics in Business and Economics
Pay Type Satisfied Neutral Dissatisfied Total
Salaried 20 13 2 35
Hourly 135 127 58 320
Total 155 140 60 355