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OpenStudy (anonymous):
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. If a certain statistician has an IQ of 140, what percent of the population has a lower IQ? A. 22% B. 47% C. 93% D. 99.6%
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OpenStudy (anonymous):
ooo, that's hard. I don't really like percentages lol
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