In Constructing a Confidence Interval Estimate for the Difference Between

question 72

Multiple Choice

In constructing a confidence interval estimate for the difference between the means of two independent normally distributed populations,we:

• A)pool the sample variances when the unknown population variances are equal.
• B)pool the sample variances when the population variances are known and equal.
• C)pool the sample variances when the population means are equal.
• D)never pool the sample variances.

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Definitions:

Secondary Reinforcer

A stimulus that gains its reinforcing properties through association with a primary reinforcer.

Certificate

A formal document attesting to a fact, such as the completion of an educational course or the qualification of the holder.

Discriminative Stimulus

A stimulus in the environment that indicates the availability of reinforcement or punishment for a particular behavior.

Generalized Stimulus

A stimulus that elicits a response after association with a conditioned stimulus in classical conditioning scenarios, indicating the learned response can transfer to similar stimuli.