Independent Simple Random Samples Are Taken to Test the Difference

question 173

Multiple Choice

Independent simple random samples are taken to test the difference between the means of two populations whose variances are known. The sample sizes are n1 = 38 and n2 = 42. The correct distribution to use is the

• A) normal distribution
• B) t distribution with 80 degrees of freedom
• C) t distribution with 79 degrees of freedom
• D) t distribution with 78 degrees of freedom

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Definitions:

Empirically Derived

Developed or derived from practical experience and observation rather than theory or pure logic.

Spotlight Effect

The conviction that others are observing one's looks and actions more than they truly are.

Personal Control

An individual's belief in their ability to influence events and their outcomes in their life.

Reciprocal Determinism

Reciprocal determinism is a psychological theory proposing that an individual's behavior is influenced by both their environment and personal factors, which in turn influence each other.