The Expected Value of a Random Variable X Is 10

question 40

Multiple Choice

The expected value of a random variable X is 10 and the standard deviation is 2. The standard deviation of the random variable Y = 2X - 10 is:

• A)2
• B)4
• C)-10
• D)-6

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Definitions:

Labor Rate Variance

The difference between the actual cost of labor and the expected (or standard) cost, used as a measure to control and optimize labor expenses.

Cost Per Unit

The costs incurred to produce, purchase, or manufacture one unit of a product, considering all relevant expenses.

Quantity Of Direct Materials

The amount of raw materials used in the production process that can be directly attributed to the final product.

Standards

Established norms or requirements in various fields that act as guidelines for achieving consistency, quality, and compatibility.