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If IQ scores are normally distributed with a mean of 100 and a standard deviation of 17 and if the population of the world is 6575000000 how many geniuses are there in the world today?
Wiki User
∙ 13y ago
I'm assuming "genius" means an unusual value (more than two standard deviations) in the right tail. This is (100 - 95.45)/2 = 2.275 percent, approximately. So:
6,575,000,000 * 0.02275 = 149,581,250 geniuses ... not that special, huh?
Wiki User
∙ 13y ago
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