The Average Age of Doctors in a Certain Hospital Is

question 77

Multiple Choice

The average age of doctors in a certain hospital is 45.0 years old. Suppose the distribution of ages is normal and has a standard deviation of 4.0 years. If 16 doctors are chosen at random for a committee, find the probability that the average age of those doctors is less than 45.5 years. Assume that the variable is normally distributed.

• A) 19.1%
• B) 30.9%
• C) 61.2%
• D) 69.1%

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Definitions:

Income

The money received by an individual or organization for work, goods, or investments, typically measured over a period of time, such as monthly or annually.

Utility Function

A representation in economic theory that quantifies the satisfaction a user obtains from consuming various bundles of goods and services.

Flood

An overflow of a large amount of water beyond its normal limits, especially over what is normally dry land.

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