A Discrete Random Variable Has a Mean of 400 and a Variance

question 116

Multiple Choice

A discrete random variable has a mean of 400 and a variance of 64.What is the standard deviation?

• A)64
• B)8
• C)20
• D)400
• E)None of the above

Analyze the effects of macroeconomic factors (e.g., housing market trends, stock market changes) on personal wealth and consumer confidence.

Apply the marginal propensity to consume and save in practical scenarios to determine saving and spending outcomes.

Examine the role of consumer spending in economic growth and the effects of changes in this spending.

Identify and explain major economic theories related to consumer behavior, including the Permanent Income Hypothesis.

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Definitions:

Confirmation Error

A cognitive bias that involves focusing on information that confirms one's preconceptions and ignoring information that contradicts them.

Framing Error

A mistake made when individuals misinterpret the context or perspective of a decision or problem, often influenced by the way information is presented.

Strategic Opportunism

A business strategy focusing on recognizing and capitalizing on opportunities with flexibility while maintaining a core strategic direction.

Lack-of-participation Error

A mistake or bias that occurs due to the absence or minimal involvement of certain groups or individuals.