When Two Population Variances Are ____________________ We Estimate Each Population $\mu _ { 1 } - \mu _ { 2 }$

question 19

Short Answer

When two population variances are ____________________ we estimate each population variance with its sample variance. The test statistic of $\mu _ { 1 } - \mu _ { 2 }$ is approximately Student t-distributed with n₁ + n₂ - 2 degrees of freedom.

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Definitions:

Stimulus Generalization

This refers to the psychological phenomenon where a response that has been learned to one stimulus is evoked by other, similar stimuli.

Operant Conditioning

A training mechanism in which the degree of a behavior is controlled by the application of rewards or punishments.

Animal

A living organism that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli.

Punishment

A consequence that reduces the probability of a behavior being repeated, often by introducing a negative outcome or removing a positive stimulus.