A Pharmaceutical Company Wishes to Test a New Drug with the Expectation

question 69

Multiple Choice

A pharmaceutical company wishes to test a new drug with the expectation of lowering cholesterol levels. Ten subjects are randomly selected and their cholesterol levels are recorded. The results are listed below. The
Subjects were placed on the drug for a period of 6 months, after which their cholesterol levels were tested
Again. The results are listed below. (All units are milligrams per deciliter.) Use the Wilcoxon signed-rank test to
Find the test statistic $\mathrm { W } _ { \mathrm { S } }$ to test the companyʹs claim that the drug lowers cholesterol levels. $$\begin{array} { l c c c c c c c c c c } \hline \text { Subject } & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 \\\hline \text { Before } & 219 & 245 & 253 & 200 & 244 & 243 & 238 & 197 & 227 & 224 \\\text { After } & 204 & 240 & 261 & 190 & 239 & 243 & 208 & 179 & 225 & 209\end{array}$$

• A)4
• B)7.5
• C)-2
• D)5.5

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Definitions:

Prejudicial

Showing prejudice or bias, leading to unfair treatment or judgments of others based on preconceived opinions rather than individual merit.

Inflexible

Lacking adaptability or willingness to change; often describes individuals, systems, or processes that are rigid and not easily modified.

Generalizations

Broad statements or beliefs that apply to a group based on observations from specific examples or experiences.

Social Categorization

The process by which individuals classify others into groups based on shared characteristics, which influences perceptions and relationships.