SOLUTION: How do you solve this question? The IQ scores of a distribution is subject to the normal distribution with the mean X=105 and standard deviation s= 15. What is the percentage (like

Question 357550: How do you solve this question? The IQ scores of a distribution is subject to the normal distribution with the mean X=105 and standard deviation s= 15. What is the percentage (likelihood) that an IQ score is lower than 135?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The IQ scores of a distribution is subject to the normal distribution with the mean X=105 and standard deviation s= 15. What is the percentage (likelihood) that an IQ score is lower than 135?
-----------------
z(135) = (135-105)/15 = 2
----
Percent(x < 135) = Percent(z < 2) = normalcdf(-100,2) = 0.9773
============
Cheers,
Stan H.
=======
RELATED QUESTIONS
Dear tutor, I have a problem reading normal distribution table that z scores is above... (answered by stanbon)

IQ test scores are standardized to produce a normal distribution with a mean of u=100... (answered by ewatrrr)

IQ scores are normally distributed with a mean of 100 and a standard deviation of 12.... (answered by Boreal)

It is known that IQ scores form a normal distribution with a mu of 100 and a standard... (answered by Theo)

Please help me solve this problem: Suppose thet IQ scores have a bell-shaped distribution (answered by solver91311)

IQ scores have a normal distribution with a mean of 100 and a standard deviation of 15. (answered by stanbon)

I need help with this one! IQ scores have a normal distribution with a mean of 100 and a (answered by stanbon)

IQ test scores are randomized to produce a normal distribution with a mean of 100 and a... (answered by stanbon)

IQ scores have a normal distribution with a mean of 100 and a standard deviation of 15. (answered by stanbon)