SOLUTION: Assume that adults have IQ scores that are normally distributed with a mean of 100100 and a standard deviation 2020. Find Upper P 3P3​, which is the IQ score separating the b
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Question 1090372: Assume that adults have IQ scores that are normally distributed with a mean of 100100 and a standard deviation 2020. Find Upper P 3P3, which is the IQ score separating the bottom 33% from the top 9797%. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Want the z score where it equals 0.03. That is z=-1.88
z=(x-mean)/sd
-1.88=(x-100)/20
-37.6=x-mean
x=62.4, the bottom 3% from the top 97%.
