Mathematics, 12.03.2020 03:11 phillipselijah2
A researcher examines 27 sedimentary samples for bromide concentration. The mean bromide concentration for the sample data is 0.383 cc/cubic meter with a standard deviation of 0.0209. Determine the 90% confidence interval for the population mean bromide 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 researcher examines 27 sedimentary samples for bromide concentration. The mean bromide concentrati...
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