A statistician knows that the population of light bulb lifetimes is normally distributed and has a standard deviation of 30 hours. A simple random sample of 36 bulbs yields a mean lifetime of 504 hours.
Construct a 99% confidence interval for the mean lifetime of all such bulbs.
______________
Interpret the interval.
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The Answer of A statistician knows that the population of light bulb lifetimes is normally distributed and has a standard deviation of 30 hours. A simple random sample of 36 bulbs yields a mean lifetime of 504 hours.
Construct a 99% confidence interval for the mean lifetime of all such bulbs.
______________
Interpret the interval.
________________________________________________________

A Statistician Knows That the Population of Light Bulb Lifetimes