Assuming that data exhibit a normal distribution, control limits set at 3 standard deviations from the mean capture how much common variation?

Assuming that data exhibit a normal distribution, control limits set at 3 standard deviations from the mean capture how much common variation?



a) 50.00%

b) 80.00%

c) 95.44%

d) 99.74%

e) 99.99%



Answer: d


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