The Scores on an Aptitude Test Are Normally Distributed with an Unknown

question 73

Short Answer

The scores on an aptitude test are normally distributed with an unknown mean, a variance of 36, and only 7% of the scores below 26.
What is the mean score?
______________

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Definitions:

Producer Surplus

The difference between what producers are willing to accept for a good versus what they actually receive, often seen as a measure of producer welfare.

Consumer Surplus

The disparity between the cost consumers are prepared to pay for a good or service and the cost they actually encounter.

Buyers

Individuals or entities that purchase goods or services in the market.

Sellers

Individuals or entities that offer goods or services for sale to consumers or other businesses.