IQ scores are normally distributed with a mean of 100 and a standard deviaiton of 15. If a certain statistician has an IQ of 120, approximately what percent of the population has an IQ greater than she does?

A. 15%
B. 9%
C. 99%
D. 91%
E. 20%

Question

IQ scores are normally distributed with a mean of 100 and a standard deviaiton of 15. If a certain statistician has an IQ of 120, approximately what percent of the population has an IQ greater than she does?

A.	15%
 		B.	9%
 		C.	99%
 		D.	91%
 		E.	20%

anonymous · Answer

well it might be d      but i'd have to remember how to use standard deviation and know what the maximum iq score is right?