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Question Watch Video Show Examples The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1000

Question Watch Video Show Examples The amount of time a certain brand of light bulb lasts is normally distributed with a mean of 1000 hours and a standard deviation of 20 hours. What is the probability that a randomly chosen light bulb will last less than 960 hours, to the nearest thousandth? Statistics Calculator

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