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23 October, 17:35

Assume that IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Approximately what percent of the population have IQ scores between 100 and 130?

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  1. 23 October, 19:07
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    Z = (122-100) / 15 = 22/15 = 1.467

    Then we have to use a z-table for a normal distribution.

    The percent of the population that has an IQ less than she does is C) 93%
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