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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 -

    wonderful program for your type of question.
    Just enter the mean and sd ,then 90 and 110 for the 'between'

  • oops - Math -

    forgot the link

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

  • Math -

    Cool, thanks!

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