Mathematics, 08.12.2019 16:31, palcochran1313

Age lightbulb is suppose to last for 1200 hours. in fact light bulbs of this type last only 1,185 hours with a standard deviation of 70 hours. what is the probability that a randomly selected light bulb will have an average life of at least 1,200?

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Age lightbulb is suppose to last for 1200 hours. in fact light bulbs of this type last only 1,185 ho...

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