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Mathematics 7 Online
OpenStudy (anonymous):

IQ scores are normally distributed with a mean of 100 and a standard deviaiton of 15. If a certain statistician has an IQ of 120, approximately what percent of the population has an IQ greater than she does? A. 15% B. 9% C. 99% D. 91% E. 20%

OpenStudy (anonymous):

well it might be d but i'd have to remember how to use standard deviation and know what the maximum iq score is right?

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