Posted by Mike on Wednesday, September 30, 2009 at 9:38pm.
Suppose scores on an IQ test are normally distributed. If the test has a mean of 100 and a standard deviation of 10, what is the probability that a person who takes the test will score between 90 and 110?

Math  Reiny, Wednesday, September 30, 2009 at 9:48pm
wonderful program for your type of question.
Just enter the mean and sd ,then 90 and 110 for the 'between'

oops  Math  Reiny, Wednesday, September 30, 2009 at 9:49pm
forgot the link
http://davidmlane.com/hyperstat/z_table.html

Math  Mike, Wednesday, September 30, 2009 at 9:54pm
Cool, thanks!
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