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OpenStudy (pphalke):
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15 a. what percent are between 85-115
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OpenStudy (jh99):
z = x-mean/standard deviation plug the numbers into that equation
OpenStudy (p0sitr0n):
it is x+-1 sigma, so by the empirical rule it is 68%
OpenStudy (p0sitr0n):
*mu
OpenStudy (p0sitr0n):
This particular result only works for the normal distribution and is an extension of Chebuscheff thm
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