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please help:) A certain manufacturer makes 400W light bulbs. Assume that these light bulbs have lifetimes that are normally distributed with a mean lifetime of

please help:)

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A certain manufacturer makes 400W light bulbs. Assume that these light bulbs have lifetimes that are normally distributed with a mean lifetime of 546 hours and a standard deviation of 40 hours. Use this table or the ALEKS calculator to find the percentage of light bulbs with lifetimes shorter than 354 hours. For your intermediate computations, use four or more decimal places. Give your final answer to two decimal places (for example 98.23%). X 5

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