
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The Ball Corporation's beverage can manufacturing plant in Fort Atkinson, Wisconsin, uses a metal supplier that provides metal with a known thickness standard deviation σ = .000943 mm. Assume a random sample of 58 sheets of metal resulted in an x¯x¯ = .2603 mm.
Calculate the 99percent confidence interval for the true mean metal thickness. (Round your answers to 4 decimal places.)
The 99% confidence interval is from______ to _______
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