In Exercise 15 8 the telephone holding times for Muzak and
In Exercise 15.8, the telephone holding times for Muzak and classical music were
Muzak 0, 1, 4, 6, 3
Classical 13, 9, 8, 15, 7
a. For comparing these two groups with the Wilcoxon test, report the ranks and the mean rank for each group.
b. Two groups of size 5 each have 252 possible allocations of rankings. For a two-sided test of H0: identical distributions with these data, explain why the P-value is 2/252 = 0.008. Interpret the P-value.
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