If We Are Testing for the Difference Between the Means

question 95

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:

Effector

An organ or cell that acts in response to a stimulus, often involved in muscle contraction or gland secretion.

Reproductive System

A system of sex organs within an organism which work together for the purpose of sexual reproduction.

Superficial

Located near the surface of the body or an organ, as opposed to deep or internal structures.