Question: Approximately how many standard deviations,centered at the mean, does it take to cover 99.7% of the possible values of a normal curve? A. zero B.

Approximately how many standard deviations,centered at the mean, does it take to cover 99.7% of the possible values of a normal curve?

A.

zero
B.

one
C.

two
D.

four
E.

six

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