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:

Personality

The combination of characteristics or qualities that form an individual's distinctive character and behavioral patterns.

Big Five Personality Traits

A model in psychology that describes human personality through five broad dimensions: openness, conscientiousness, extraversion, agreeableness, and neuroticism.

Maturation and Aging

The natural process of growth and development over time, leading to physical, cognitive, and emotional changes, as well as the eventual decline in bodily functions and capabilities.

Secondary Traits

Personality characteristics that are less consistent and more situational, as opposed to primary traits which are more enduring and consistent.