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A biologist examines 17 water samples for nitrate concentration. The mean nitrate concentration for the sample data is 0.822 cc/cubic meter with a standard deviation

A biologist examines 17 water samples for nitrate concentration. The mean nitrate concentration for the sample data is 0.822 cc/cubic meter with a standard deviation of 0.0018. Determine the 80% confidence interval for the population mean nitrate concentration. Assume the population is approximately normal.

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Construct the 80%80% confidence interval. Round your answer to three decimal places.

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