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Posted by on Monday, March 4, 2013 at 4:51pm.

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 - , Monday, March 4, 2013 at 4:57pm

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

  • Statistic - , Thursday, July 21, 2016 at 8:49pm

    B

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