Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ score separating the top 37% from the others. Answer in one decimal place.

Answer 1

you can do lots of Z table stuff here:

http://davidmlane.com/hyperstat/z_table.html

Answer 2

X = 100 + 15(.33) = 105.0