SOLUTION: A person must score in the upper 2% of the population on an IQ test to qualify for membership in Mensa. If IQ scores are normally ldistributed with a mean of 100 and a standard dev

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Question 335444: A person must score in the upper 2% of the population on an IQ test to qualify for membership in Mensa. If IQ scores are normally ldistributed with a mean of 100 and a standard deviation of 15, what score must a person have to qualify for Mensa?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P%28z%29=0.98
Using EXCEL's NORMSINV function with an argument of 0.98, I got z=2.05375
z=%28x-mu%29%2Fsigma
%28x-100%29%2F15=2.054
x-100=30.81
x=130.81 or rounded up,
x=131