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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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