Mathematics, 21.04.2020 04:55 thevampsrock3
A chemist examines 15 sedimentary samples for nitrate concentration. The mean nitrate concentration for the sample data is 0.670 cc/cubic meter with a standard deviation of 0.0616.
a. Determine the 80% confidence interval for the population mean nitrate concentration. Assume the population is approximately normal. Round your answer to three decimal places.
b. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
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A chemist examines 15 sedimentary samples for nitrate concentration. The mean nitrate concentration...
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