If We Are Testing for the Difference Between the Means

question 113

Multiple Choice

If we are testing for the difference between the means of two independent populations with samples of n₁ = 20 and n₂ = 20,the number of degrees of freedom is equal to:

• A)39
• B)38
• C)19
• D)18

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Definitions:

Laxatives

Substances used to stimulate bowel movements or increase the bulk of feces, typically used to treat constipation.

Purging

The act of forcefully expelling contents from the body, often used in the context of eating disorders to describe the attempt to eliminate consumed food.

Bulimics

Individuals who suffer from bulimia, an eating disorder characterized by episodes of binge eating followed by purging, to prevent weight gain.

Physical Exercise

Any bodily activity that enhances physical fitness, health, and overall well-being, including cardiovascular, strength, and flexibility exercises.