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A survey of 30 households * 5 points found that the mean age of an LED TV is 4 years. Assuming the standard deviation of

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A survey of 30 households * 5 points found that the mean age of an LED TV is 4 years. Assuming the standard deviation of the population is 0.75 year; find the best point estimate of the population mean and the 99% confidence interval of the population mean. u .1. Add file

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