In the Wilcoxon Rank-Sum Test, the Null Hypothesis May Be

question 14

Multiple Choice

In the Wilcoxon rank-sum test, the null hypothesis may be expressed as: ​ ​
If , then:

• A) the test is not valid.
• B) we can conclude that the null hypothesis is true and there is no difference in the two population medians only if the sample provides sufficient support for this assertion.
• C) there is insufficient evidence to reject the null hypothesis, but nothing is said about the validity of the null hypothesis.
• D) the median of population 1 is equal to the mean of population 2, provided both populations are heavily skewed.

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Definitions:

Cardiac Vein

Blood vessels that drain deoxygenated blood from the myocardium (heart muscle) into the right atrium of the heart, playing a crucial role in the circulatory system.

Cardiac Tamponade

A medical emergency where fluid accumulates in the pericardium, compressing the heart and reducing its ability to pump blood.

Pericardial Cavity

Space within the mediastinum in which the heart is located.

Pulmonary Circulation

The portion of the cardiovascular system that carries deoxygenated blood from the heart to the lungs and returns oxygenated blood back to the heart.