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Bobby collects data from 30 adolescents (15 aged 13-15 and 15 aged 16-18) on the average minutes of daily practice on the guitar and converts the data to ranks. He wants to know whether age is related to practice time. He should compute a ______. Group of answer choices A. Mann-Whitney U test B. Spearman's rho C. Wilcoxon T test D. Rank Sums test
Sagot :
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