Julia has an IQ of 130.If the mean for IQ is 100 with a standard deviation of 15,what percentage of the population has an IQ greater than Julia's (assume a normal distribution)?
A) 0 percent
B) 2.5 percent
C) 32 percent
D) 50 percent

Question

Quizplus · Accepted Answer

Julia's IQ of 130 is 2 standard deviations above the mean (100 + 2*15 = 130). In a normal distribution, approximately 2.5% of the population has an IQ greater than 2 standard deviations above the mean.

Julia Has an IQ of 130