Solve the problem.A data set consists of 935 lightbulbs. Over a long period of time, the lifetimes of those lightbulbs have been tested. It has been found that the mean and standard deviation are known and the lifetimes of the bulbs are normally distributed. What number of bulbs within this data set will have lifetimes that lie within 3 standard deviations to either side of the mean? Round your answer to the nearest whole number.
A. 935
B. 466
C. 785
D. 933
Answer: D
Mathematics
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