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Section: 17-1 The Wilcoxon Signed Rank Test for One Population Median The General Electric service department...

Section: 17-1 The Wilcoxon Signed Rank Test for One Population Median The General Electric service department believes that the median time for a service call should be 30 or fewer minutes. To test this, the following random sample of service times was collected (shown below). Given that the managers do not wish to make the assumption that the population is normally distributed, the critical value for the test about median service times, using a .05 level of significance, is: Time 33 27 40 34 22 19 40 73 26 5 40 8 37

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