A) None of these are true.
B) 95 % of the light bulbs in the sample had lifetimes between 579.2 hours and 588.8 hours
C) The probability that the population mean is between 579.2 hours and 588.8 hours is 0.95 .
D) We are 95 % confident that the mean lifetime of all the bulbs in the population is between 579.2 hours and 588.8 hours.
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