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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 (anonymous):
z(70)=70-100/15=-2 z(130)=130-100/15=2 area in the cure z(-2) to z(2) i.e 2 * area from P(0<Z<2)
OpenStudy (anonymous):
now u can find the region.
OpenStudy (anonymous):
alrite
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