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statistics

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"suppose that IQ scores have a bell-shaped distribution with a mean of 97 and standard deviation of 17.Using empirical rule, what percentage of IQ score are less than 46?"

  • statistics -

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

  • statistics -

    0.15%

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