If the Variances of the Two Populations Are Not Equal

question 48

True/False

If the variances of the two populations are not equal, it is appropriate to use the "unpooled" formula to determine the t statistic for the hypothesis test of the difference in the two population means.

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Definitions:

S. Freud

The Austrian neurologist Sigmund Freud founded the therapeutic approach of psychoanalysis, where psychopathological issues are addressed through a dialogue between the analyst and the patient.

Classical Conditioning

A learning process in which two stimuli are continuously coupled; the response, initially precipitated by the second stimulus, is ultimately precipitated by the first stimulus by itself.

UCS

An acronym for "Unconditioned Stimulus," a stimulus that naturally and automatically triggers a response without prior learning.

CS

Common shorthand for "conditioned stimulus," a term from classical conditioning in psychology that refers to a previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.