Mathematics, 07.06.2021 02:40 22nathanieltimms
The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20
20
hours and the mean lifetime of a bulb is 500
500
hours. Find the probability of a bulb lasting for between 480
480
and 526
526
hours. Round your answer to four decimal places.
Answers: 2
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The life of light bulbs is distributed normally. The standard deviation of the lifetime is 20
20
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