Question: For the standard normal distribution, how much confidence is provided within 3 standard deviations above and below the mean? A . 9 9 . 8

For the standard normal distribution, how much confidence is provided within 3 standard deviations above and below the mean?
A.
99.87%
B.
97.22%
C.
99.74%
D.
95.44%
E.
90.00%

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