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OpenStudy (anonymous):
Adult IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the Empirical Rule to find the percentage of adults with scores between 70 and 130
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OpenStudy (amistre64):
mean = 100 sd = 15 70 and 130; are 30 away from the mean 30/15 = 2 2 sds = 95%
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