1 answer

Assume that adults have IQ scores that are normally distributed with a mean of 100 and...

Question:

Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation 15. Find Upper P 2P2​, which is the IQ score separating the bottom 22​% from the top 98​%.


Answers

Answer

Using invNorm

setting

area = 0.22 (bottom 22%)

mean = 100

standard deviation = 15

we get

P22 = invNorm(area, mean,sd)

= invNorm(0.22,100,15)

= 88.42

.

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