Posted by Linda on Wednesday, October 8, 2008 at 11:31am.
on a standard Iq test the scores are normally distributed with a mean of 100 and a standard devaition of 20.
A. if you score 140 in whst precentile are you?
B. if you score 90 on what percentil are you?

data  Ms. Sue, Wednesday, October 8, 2008 at 11:38am
When you post your question, please tell us what you know about the answer and be specific about how you'd like us to help you.

data  lin, Wednesday, October 8, 2008 at 11:49am
I don't understand how to do it, there are no examples in my book
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