IQ Scores Are Normally Distributed with a Mean of 100

question 113

Multiple Choice

IQ scores are normally distributed with a mean of 100 and a standard deviation of 15.Based on properties of the mathematical normal curve,which one of the following statements is TRUE?

• A)Approximately 90 percent of the scores fall between 85 and 115.
• B)A score of 70 is equally as probable as is a score of 130.
• C)There are more scores above 130 than below 85.
• D)There are more scores above the mean than below the mean.

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Definitions:

Sale Occurs

The event in which goods or services are transferred from a seller to a buyer for monetary consideration.

Sales Return

Transactions that involve the returning of sold goods by customers, resulting in a reduction of revenue.

Credits

Credits are accounting entries that increase liabilities or equity accounts, or decrease asset or expense accounts.

Sales Returns And Allowances

Purchase returns and allowances from the seller’s perspective. See Purchase return and Purchase allowance, above.