A Wilcoxon Rank Sum Test for Comparing Two Populations Involves

question 109

Multiple Choice

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

• A) 14.0.
• B) 10.5.
• C) 6.0.
• D) -2.0.

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