In a Large Sample Mann-Whitney U Test in Which the Sample

question 23

Multiple Choice

In a large sample Mann-Whitney U test in which the sample size from the first population is 30 and the sample size from the second population is 40, which of the following is the expected U value if the null hypothesis of equal median values is true?

• A) 1,200
• B) 70
• C) 35
• D) 600

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Definitions:

Rectus Abdominis

A long muscle of the anterior abdominal wall that helps flex the spine and maintain posture.

Transverses Abdominis

A muscle layer of the anterior and lateral abdominal walls which is deep to (beneath) the internal oblique muscle.

Internal Oblique

A muscle within the abdominal wall that acts in trunk rotation and lateral flexion, also aiding in respiration.

Transversus Thoracis

A muscle within the chest that plays a role in the movement of the thoracic cage.