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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?
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OpenStudy (anonymous):
@Directrix
OpenStudy (anonymous):
@kropot72
Directrix (directrix):
@HELPFOARMYLUV123 Do you know how to get the z-score for this?
OpenStudy (anonymous):
no. how?
OpenStudy (anonymous):
I know how to use the table, it's easy.
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Directrix (directrix):
What would z be for this problem? See attachment.
OpenStudy (anonymous):
wouldnt it just be -x (line on top) simplified?
OpenStudy (anonymous):
@karatechopper plesae help?
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