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Use the normal distribution of IQ​ scores, which has a mean of 105105
and a standard deviation of 1212​,
and the following table with the standard scores and percentiles for a normal distribution to find the indicated quantity.
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Percentage of scores less than 8181
is nothing​%.
​(Round to two decimal places as​ needed.)

    • 6 years ago
    • 1
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    • attachment
      Q1.xlsx