A Grouped Frequency Distribution Has a Mean of 200 and a Standard

question 85

Multiple Choice

A grouped frequency distribution has a mean of 200 and a standard deviation of 20. The class limits for one class are 220 up to 240. Based on the normal distribution, what is the probability that an observation would be in this class?

• A) 0.1359
• B) 0.3413
• C) 0.4772
• D) 0.8185

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Definitions:

Extrinsic Reward

A reward that comes from an external source rather than from the intrinsic pleasure of the activity itself.

Overjustification Effect

A psychological effect whereby externally provided rewards can reduce a person's intrinsic motivation to perform a task, because the person comes to attribute their actions to the external rewards rather than their own interest in the task.

External Incentive

A reward or punishment provided by an external source to motivate behavior.

Intrinsic Motivation

The drive to engage in activities for their inherent satisfaction and interest, rather than for some separable consequence.