A Discrete Random Variable Has a Mean of 400 and a Variance

question 81

Multiple Choice

A discrete random variable has a mean of 400 and a variance of 64.What is the standard deviation?

• A)64
• B)8
• C)20
• D)400

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Definitions:

Moderately Distressed

A state of experiencing a medium level of stress, discomfort, or emotional upset, not extreme but noticeable and significant.

Unconcerned

Not worried, troubled, or interested; indifferent.

Uninterested

Showing no desire or enthusiasm to be involved with or to know about something; indifferent.

Human Face

The front part of a person's head, including the forehead, eyes, nose, mouth, and chin, which is key to identifying individuals and expressing emotions.