The results shown below are mean productivity measurements (average number of assemblies completed per hour) for a random sample of workers at each of three work stations.
(a) At α = .05, is there a difference in median productivity? Use MegaStat, MINITAB, or a similar computer package for the calculations.
(b) Use one-factor ANOVA to compare the means. Do you reach the same conclusion?
(c) Make a histogram or other display of the pooled data. Does the assumption of normality seem justified?

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Hourly Productivity of Assemblers in Plants Work Station Finished Units Produced Per Hour A (9 workers) 3.6 5.1 2.8 46 4.7 4. 34 2.9 4.5 B (6 workers) 2.7 3.1 5.0 9 2.2 3.2 C(10 workers) 68 25 5.4 6.7 4.6 3.9 54 4.9 7.1 8.4