Mathematics, 09.02.2022 17:10 LadyHolmes67

The life of light bulbs is distributed normally. The variance of the lifetime is 225 and the mean lifetime of a bulb is 570 hours. Find the probability of a bulb lasting for at least 545 hours. Round your answer to four decimal places.

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The life of light bulbs is distributed normally. The variance of the lifetime is 225 and the mean li...

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