A Heavily Right-Skewed Population Has a Mean of 28 and a Standard

question 43

Multiple Choice

A heavily right-skewed population has a mean of 28 and a standard deviation of 2.What is the probability that a random sample of 5 from this population will average less than 27?

• A) 0.1314
• B) 0.3085
• C) 0.6915
• D) We cannot answer this question because the sample size is small and the population is non-normal; the distribution of cannot be assumed to be normal.

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Definitions:

Intermittent Reinforcement

A conditioning schedule where a behavior is reinforced only some of the time, leading to more resistant and persistent responses.

Primary Reinforcement

A naturally rewarding stimulus, such as food or water, that satisfies a basic biological need and hence reinforces a behavior directly.

Secondary Reinforcement

A process in conditioning where a stimulus reinforces a behavior after it has been associated with a primary reinforcer.

Variable Ratio Schedule

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