An overnight shipping firm operates major sorting facilities (hubs) in six cities. To compare the performance of the hubs, it tracked the shipping time (in hours) required to process 20 randomly selected priority packages as they passed through each hub.
(a) Fill in the missing cells of the ANOVA summary table.
(b) State and interpret the null hypothesis tested by the F-test in the analysis of this experiment.
(c) Does the F-test reject this null hypothesis?
(d) What is the implication for management of the F-test? Assume that the data meet the required conditions.

  • CreatedJuly 14, 2015
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