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Mathematics, 25.03.2020 02:00 thatlostgirl7740

A chemist examines 14 sedimentary samples for magnesium concentration. The mean magnesium concentration for the sample data is 0.030 cc/cubic meter with a standard deviation of 0.0771. Determine the 90% confidence interval for the population mean magnesium concentration. Assume the population is approximately normal. Step 1 of 2 : 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 14 sedimentary samples for magnesium concentration. The mean magnesium concentrat...
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