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Mathematics 12 Online
OpenStudy (anonymous):

Some psychologists believe that a "genius" should be defined as anyone having an IQ over 140. If IQ scores are normally distributed with a mean of 100 and a standard deviation of 13, and if the population of the world is 6,575,000,000, how many geniuses are there in the world today? A. 536,000,000 B. 7,232,500 C. 115,000 D. 24,985,000 E. 123,000

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