A Cholesterol Test Was Given to 10 Heart Patients with High

question 38

Multiple Choice

A cholesterol test was given to 10 heart patients with high cholesterol levels. The same 10 heart patients are then given a new cholesterol-reducing drug for six months. Before the patients begin taking the drug, they are told to maintain their current diets and eating habits so that the effect of the drug can be more effectively determined. After taking the drug for six months, the same patients are given a cholesterol test again. The pharmaceutical company manufacturing the medicine wants to know if the drug is effective in reducing the cholesterol levels of the patients. The cholesterol levels before and after taking the drug are recorded for each patient. The population of cholesterol levels is not normally distributed. Which one of the following nonparametric tests is appropriate for this problem?

• A) Wilcoxon signed ranks test
• B) Wilcoxon rank sum test
• C) sign test
• D) Kruskal-Wallis test
• E) Spearman's rank correlation test

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Definitions:

Weber

A German sociologist, economist, and political scientist known for his theory on the process of rationalization in Western society.

Society

A group of individuals involved in persistent social interaction, or a large social grouping sharing the same geographical or virtual territory, subject to the same political authority and dominant cultural expectations.

Estate Systems

A social hierarchy system where land and power are divided among lords and peasants, often inherited and fixed.

Agricultural Societies

Societies primarily engaged in farming and livestock cultivation as their main source of livelihood and economic activity.