Scores of Adults Aged 60 to 64 on a Common

question 47

Multiple Choice

Scores of adults aged 60 to 64 on a common IQ test are approximately Normally distributed with mean 90 and standard deviation 15.
Since IQ scores of adults aged 60 to 64 are Normally distributed with mean 90 and standard deviation 15, then about 40% of the scores are between

• A) 60 and 120.
• B) 45 and 135.
• C) 85 and 90.
• D) the 25th and 75th percentiles.
• E) the 30th and 70th percentiles.

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Definitions:

Price Ceiling

A legal maximum price that can be charged for a good or service, above which it cannot rise, often set by government.

Shortage

A market condition in which the demand for a product exceeds its supply at a particular price.

Demand Curve

A graph showing the relationship between the price of a good and the quantity of that good consumers are willing and able to buy.

Living Wage

A wage level that is high enough to maintain a normal standard of living.