The Standard Deviation of a Normal Random Variable X Is

question 91

Multiple Choice

The standard deviation of a normal random variable X is $20. Given that P(X ≤ $10) = 0.1841. From this we can determine that the mean of the distribution is equal to:

• A)$13.
• B)$26.
• C)$20.
• D)$28.

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Definitions:

Actual Hours

The actual number of hours worked or spent on a specific task or project, compared to planned or estimated hours.

Standard Hours

A predetermined or established amount of time within which a task or job is expected to be completed.

Units Produced

The total volume or number of items manufactured during a given period.

Standard Costs

Predetermined costs for materials, labor, and overhead used as a benchmark to measure actual performance against.