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Statistic

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IQs among undergraduates at Mountain Tech are approximately normally distributed. The mean undergraduate IQ is 110. About 95% of undergraduates have IQs between 100 and 120. The standard deviation of these IQs is about

A. 5

B. 10

C. 15

D. 20

E. 25

  • Statistic -

    95% should include -2 to + 2 standard deviation.

  • Statistic -

    B

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