A Wilcoxon Rank Sum Test for Comparing Two Populations Involves

question 78

Multiple Choice

A Wilcoxon rank sum test for comparing two populations involves two independent samples of sizes 15 and 20. The un-standardized test statistic (that is the rank sum) is T = 210. The value of the standardized test statistic z is:

• A) 14.0
• B) 10.5
• C) 6.0
• D) -2.0
• E) -3.2

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