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If IQ Scores Are Normally Distributed,having a Mean of 100

question 12

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If IQ scores are normally distributed,having a mean of 100 and a standard deviation of 15,approximately what percentage of people have IQ scores between 55 and 145?


Definitions:

Inflation

The rate at which the general level of prices for goods and services rises, eroding purchasing power over time.

Bond Prices

The market price at which a bond is currently trading, influenced by interest rates, the bond's credit rating, and other market factors.

Market Value

The market's current rate for transactions involving an asset or service.

Bond

A fixed income instrument that represents a loan made by an investor to a borrower, typically corporate or governmental, where the issuer owes the holders a debt and is obliged to pay interest and/or to repay the principal at a later date, termed maturity.

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