Refer to the study of "power naps" during work breaks, Exercise 8.37. Recall that you analyzed data collected by a major airline that had recently begun encouraging reservation agents to nap during their breaks. The number of complaints received about each of a sample of 10 reservation agents during the 6 months before naps were encouraged and during the 6 months after the policy change are reproduced in the table below. Compare the distributions of number of complaints for the two time periods using the Wilcoxon signed rank test. Use α = .05 to make the appropriate inference.

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