Mathematics, 21.11.2020 01:30 francisco42002
A brand of light bulbs has a mean lifetime of 1,500 hours and a standard deviation of 150 hours. A sample of 100 light bulbs gave a mean lifetime of 1,400 hours. What is the margin of error for the sample?
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A brand of light bulbs has a mean lifetime of 1,500 hours and a standard deviation of 150 hours. A s...
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