The Expected Value of a Random Variable X Is 140

question 113

Multiple Choice

The expected value of a random variable X is 140 and the standard deviation is 14. The standard deviation of the random variable Y = 3X - 10 is:

• A)42
• B)6.48
• C)14
• D)32

---

Definitions:

Privacy

The state or condition of being free from unauthorized intrusion or disclosure of personal information.

Internet

The Internet is a global network of interconnected computers and servers that use standardized communication protocols to exchange data and provide diverse services.

B2C Model

Business-to-Consumer model, a sales model in which businesses sell products or services directly to consumers.

Sell-Side Marketplaces

Online platforms where sellers can offer products or services directly to buyers, typically used in business-to-business or business-to-consumer transactions.