Bell shaped distribution with a mean


Scores on an exam follow an approximately bell shaped distribution with a mean of 77.7 and a standard deviation of 5.9 points. Approximately, what percentage of the data is between 71.8 points and 83.6 points?

A. 68%

B. 95%

C. 99.7%

D. 50%

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Basic Statistics: Bell shaped distribution with a mean
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