If a Distribution Is Normal with μ = 50 and σ

question 29

Multiple Choice

If a distribution is normal with μ = 50 and σ = 10, then what proportion of the scores will fall between 20 and 80?

• A).3413
• B).6826
• C).9544
• D).9974

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Definitions:

Variable-ratio

A schedule of reinforcement where a response is reinforced after an unpredictable number of responses, leading to high and steady rates of response.

Fixed-ratio

A schedule of reinforcement where a response is rewarded only after a specified number of responses.

Fixed-interval

Refers to a schedule of reinforcement where the first response is rewarded only after a specified amount of time has elapsed, commonly used in behavioral psychology.

Variable-interval

A timing schedule in operant conditioning where reinforcement is provided after an unpredictable time interval, leading to a steady rate of response.