Mathematics, 17.09.2019 08:30 tddreviews

The average life of a lightbulb is 2500 h, with a standard deviation of 200 h. suppose that 10,000 bulbs are purchased to equip a new building. assume that the lives are normally distributed. how many of the light bulbs would be expected to burn out after just 1800 h?

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The average life of a lightbulb is 2500 h, with a standard deviation of 200 h. suppose that 10,000 b...

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