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Confidence interval for the mean number

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Reference no: EM131173579

A study was conducted to estimate the mean number of weekly hours that adults in the US use computers at home.

A random sample of 81 adults give a mean weekly computer usage time of 8.5 hours. From prior studies, the population standard deviation is assumed to be 3.6 hours.

What is the 95% confidence interval for the mean number of weekly hours that United States adult use computers at home? Show work.

Reference no: EM131173579

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