If X Is a Normal Random Variable with a Standard

question 73

Multiple Choice

If X is a normal random variable with a standard deviation of 10, then 3X has a standard deviation equal to:

• A) 10 .
• B) 13 .
• C) 30 .
• D) 90 .

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Definitions:

Extraverted

A personality trait characterized by outgoingness, high energy, and a preference for social interaction.

Emotional Labour

The process of managing feelings and expressions to fulfill the emotional requirements of a job.

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Service professionals who take orders, serve food and beverages, and attend to guests' needs in dining establishments.

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Individuals who work in a bank and are responsible for handling customer transactions, such as deposits, withdrawals, and money transfers.