You are performing the Wilcoxon rank-sum test. The 13th through 15th values in an ordered array of pooled sample data all equal $180 (while the 12th value is less and the 16th value is more). The appropriate ranks for the three $180 values are:

a. 14, 14, 14 c. 12.5, 13, 14.5
b. 13, 14, 15 d. 12.5, 13, 15


A

Business

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