SOLUTION: As measured by the Stanford-Binet test, IQ scores are approximately normally distributed with mean 100 and standard deviation 16. Mensa is an organization whose members have IQ sco

Question 1180956: As measured by the Stanford-Binet test, IQ scores are approximately normally distributed with mean 100 and standard deviation 16. Mensa is an organization whose members have IQ scores in the top 2% of the population. To be admitted to Mensa, a person\'s Stanford-Binet IQ score is at least:
A. 100 - (16 x 2.05) = 67.20.
B. 100 - (16 x 0.98) = 84.32.
C. 100 + (16 x 2.05) = 132.80
D. 100 + (16 x 0.98) = 1 5.68
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
It is C.
z=(x-mean)/sd
so 2.05=(x-mean)/16
x=mean+(16*2.05)
It also has to be well over 100.
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