If X Is a Normal Random Variable with Standard Deviation

question 56

Multiple Choice

If X is a normal random variable with standard deviation 3.00, and if the probability that X is less than 7.64 is .648 (as shown below) , then what is the mean of X? (Note: the diagram is not necessarily to scale.)

• A) 5.6
• B) 6.0
• C) 6.2
• D) 6.5

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Definitions:

Temper Flares

A sudden outburst of anger or frustration.

Generate

To bring into existence; to produce or create something, often through a process of thought, discussion, or physical action.

Frustration Awareness

The recognition and understanding of feelings of frustration, including its sources and effects on behavior and mood.

Aftermath

The consequences or effects that follow a significant event or situation.