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Nielson Media Research reports the household mean viewing time during the 8:00 p.m. to 11:00 p.m. time period is 7.75 hours per week. This was base on a sample size of 180 household resulting in a sample standard deviation of 3.45 hours. What is the 95% confidence interval estimate of the mean television viewing time per week during the 8:00 p.m. to 11:00 p.m. time period?

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