The Difference Between Means Is 4

question 50

Multiple Choice

The difference between means is 4. The pooled variance is 9. What is the value of Cohen's d for an independent samples t test?

• A) 2.25
• B) .44
• C) .75
• D) 1.33

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Definitions:

Red Blood Cells

Cells found in blood that are responsible for carrying oxygen from the lungs to the body's tissues and returning carbon dioxide from the tissues back to the lungs.

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A condition characterized by a lack of enough healthy red blood cells to carry adequate oxygen to the body's tissues, resulting in fatigue and weakness.

Hematocrit

A blood test measurement that indicates the percentage of red blood cells in a volume of blood.

Allergy Scratch Test

A diagnostic test to identify substances to which an individual is allergic, involving a small scratch on the skin with the allergen.