MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A supervisor records the repair cost for 17 randomly selected VCRs. A sample means of $68.83 and a standard deviation of $12.17 are subsequently computed. Determine the 80% confidence interval for the mean repair cost for the VCRs. Assume the population is approximately normal.
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Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
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