Mathematics, 08.02.2021 19:20 jasmelynn16

A random sample of 105 light bulbs had a mean life of 441 hours with a standard deviation of 40 hours. Construct a 90% confidence interval for the mean life, mu, of all light bulbs of this type.

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A random sample of 105 light bulbs had a mean life of 441 hours with a standard deviation of 40 hour...