Under What Circumstances Should the Standard Normal Distribution Be Used

question 21

Multiple Choice

Under what circumstances should the standard normal distribution be used when employing the Mann-Whitney U test?

• A) When the sample sizes are equal from the two populations
• B) When the sample sizes are greater than 20
• C) When the populations are normally distributed
• D) You would never use the standard normal distribution.

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Definitions:

Electrical Events

Activities or processes in the body that involve the flow or movement of electrical charges, such as nerve impulses and muscle contractions.

Heart

A muscular organ in most animals, which pumps blood through the circulatory system by rhythmic contraction and dilation.

Brachial Artery

A major blood vessel of the upper arm that supplies blood to the arm and hand.

Blood Pressure

The force exerted by circulating blood upon the walls of blood vessels, typically measured in the arteries.