Comparing the output of strawberries grown on plots using fertilizer A with that grown on otherwise identical plots using fertilizer B, in order to make a general assessment of relative fertilizer effectiveness, may well call for:

A) the sign test
B) Kruskal-Wallis test
C) Wilcoxon rank-sum test
D) Wilcoxon signed-rank test
E) either Kruskal-Wallis test or Wilcoxon rank-sum test

Question

Madyson Williams · Accepted Answer

Final Answer : C, Explanation :  The Wilcoxon rank-sum test is appropriate for comparing two independent samples, such as the outputs from plots using fertilizer A and those using fertilizer B.

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