A researcher examines 4 sedimentary samples for mercury concentration. The mean mercury concentration for the sample data is 0.621 cc/cubic meter with a standard deviation of 0.0128. Determine the 80% confidence interval for the population mean mercury 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.
A researcher examines 4 sedimentary samples for mercury concentration. The mean mercury concentration for the sample data is 0.621 cc/cubic meter with a standard deviation of 0.0128. Determine the 80% confidence interval for the population mean mercury 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.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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