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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 85 and 115.
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OpenStudy (anonymous):
Z_1 = ( 85 - 100 ) / 15 = ... Z_2 = ( 115 - 100 ) / 15 = ... Look up the table for probabilty
OpenStudy (anonymous):
is this the answer 68%
OpenStudy (anonymous):
Yupe..eee! P ( -1 < z < 1 ) = 68%
OpenStudy (anonymous):
i need help with another
OpenStudy (anonymous):
Just open new post as you've done so far!
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