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The mean lifespan of a generic brand of incandescent light bulbs is 1,074 hours with a standard deviation of 97. Use the Z-Score Table to

The mean lifespan of a generic brand of incandescent light bulbs is 1,074 hours with a standard deviation of 97. Use the Z-Score Table to determine what percent of these light bulbs should last between 873 and 1,154 hours

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