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LL CREDIT Problem 6) This problem has three independent parts a), b, and c) a) (5 points). The life in hours of a 75-watt light

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LL CREDIT Problem 6) This problem has three independent parts a), b, and c) a) (5 points). The life in hours of a 75-watt light bulb is known to be normally distributed with a=25 hours. A random sample of 25 bulbs has a mean life of 1014 hours. Construct a 99% lower confidence bound on the mean life. (Round your answer to two decimal places)

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