Mathematics, 19.02.2020 04:37 velaserik1
A new extended-life light bulb has an average life of 750 hours, with a standard deviation of 50 hours. If the life of these light bulbs approximates a normal distribution, about what percent of the distribution will be between 600 hours and 900 hours?
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A new extended-life light bulb has an average life of 750 hours, with a standard deviation of 50 hou...
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