In a study to investigate the effect of regular exercise on raising HDL (good cholesterol) levels, a random sample of five male subjects known to have low HDL levels had their HDL measured. After six months on a regular exercise schedule, it was measured again. The data are given in the following table. The researcher is interested in testing H₀: initial and final HDL measurements have the same distribution against the one-sided alternative H_a: final HDL levels are systematically lower. The P-value for the Wilcoxon signed rank test W⁺is: A)0.0281. B)0.0329. C)0.0495. D)0.0694.

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The Answer of In a study to investigate the effect of regular exercise on raising HDL (good cholesterol) levels, a random sample of five male subjects known to have low HDL levels had their HDL measured. After six months on a regular exercise schedule, it was measured again. The data are given in the following table. The researcher is interested in testing H₀: initial and final HDL measurements have the same distribution against the one-sided alternative H_a: final HDL levels are systematically lower. The P-value for the Wilcoxon signed rank test W⁺is: A)0.0281. B)0.0329. C)0.0495. D)0.0694.

In a Study to Investigate the Effect of Regular Exercise