In a Study to Investigate the Effect of Diet on Reducing

question 12

Multiple Choice

In a study to investigate the effect of diet on reducing cholesterol levels,a random sample of five subjects known to have high cholesterol had their cholesterol measured at the beginning of the study and after 6 months on a special diet.The data are given in the table below. The data are to be analyzed using the Wilcoxon signed rank test.The five differences are to be assigned an appropriate rank.What rank should the difference of -7 be assigned?

• A)1
• B)2
• C)3

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Definitions:

Cardiac Defect

An abnormality in the structure of the heart that is present from birth, potentially affecting the walls, valves, arteries, or veins of the heart.

Bacterial Endocarditis

A serious condition involving the inflammation of the inner layers of the heart, often caused by bacterial infection.

Streptococcus Viridans

A group of bacteria commonly found in the mouth and respiratory tract, which can sometimes cause infection, especially in people with weakened immune systems.

Causative Agent

A factor, such as a microorganism or chemical, that is the direct cause of a disease or condition.