The Wilcoxon Signed-Rank Test Statistic Is Approximately Normally Distributed Whenever

question 60

Multiple Choice

The Wilcoxon signed-rank test statistic is approximately normally distributed whenever the sample sizes are larger than or equal to which of the following values?

• A) 10
• B) 20
• C) 25
• D) 35

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Definitions:

Therapeutically

Pertaining to the treatment, alleviation, or prevention of disease; aimed at healing or providing therapy.

Contrast Medium

A substance used in medical imaging examinations to improve the visibility of internal body structures in the resulting images.

Common Bile Duct

Duct that carries bile to the duodenum. It is formed from the merger of the cystic and hepatic ducts.

Cholangiography

A test that evaluates the function of the bile ducts by injection of a contrast medium directly into the common bile duct (during gallbladder surgery) or through a T-tube (after gallbladder surgery or during radiologic testing) and taking an X-ray.