Cholesterol (mg/dL) was measured in the same patients before and after taking drug D. Do a...

Cholesterol (mg/dL) was measured in the same patients before and after taking drug D. Do a Wilcoxon signed-rank test for paired samples: state the null and (non-directional) alternative hypotheses, calculate (or bound) the p- value, and clearly state your conclusion for significance level ? = 0.05. The appropriate table is at the end of the quiz.

Before. After
200 250

190 245

180 175

190 188

180 500

200 260

190 260

190 230

a) Why would you do a Wilcoxon signed-rank test rather than a paired t-test?

b) Explain the difference between a paired sample and an unpaired sample.

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Expert Solution

orchestra answered 1 year ago

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