If We Are Testing for the Difference Between the Means

question 69

Multiple Choice

If we are testing for the difference between the means of 2 independent populations presuming equal variances 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:

Generalization

A broad statement or conclusion that applies to many instances, derived from specific cases.

Positive Instance

An item that belongs to a given class and possesses the trait attributed to the class by a given generalization.

Negative Instance

An item that belongs to a given class and does not possess the trait attributed to the class by a given generalization.

Inductive Generalization

A reasoning process that involves making broad generalizations based on specific observations.