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:

Alogia

A term used in psychiatry to describe a poverty of speech, where an individual produces brief and unelaborated responses during conversation.

Poverty of Speech

A reduction in the amount of spontaneous speech, often seen in various psychiatric and neurological conditions.

Loss of Volition

A decrease in the motivation or ability to make decisions or initiate voluntary action, often a symptom of psychological disorders.

Prodromal Phase

The period during which the symptoms of schizophrenia are not yet prominent, but the person has begun to deteriorate from previous levels of functioning.