The Mean of a Normally Distributed Group of Weekly Incomes

question 9

Multiple Choice

The mean of a normally distributed group of weekly incomes of a large group of executives is $1,000 and the standard deviation is $100. What is the z-score for an income of $1,100?

• A) 1.00
• B) 2.00
• C) 1.683
• D) -0.90

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Definitions:

Historic Trends

Patterns or movements identified through the study of historical events and data over time.

Relative Anonymity

A state in which an individual's identity is not completely unknown but is not fully identifiable within a larger group or context.

Purity

The state of being free from contamination, pollution, or moral corruption.

Dosage

In a medical context, it refers to the amount and frequency of a drug or medication given to a patient.