MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The lengths of lumber a machine cuts are normally distributed with a mean of
105 inches and a standard deviation of 0.60 inch.
(a) What is the probability that a randomly selected board cut by the machine has a length greater than 105.24 inches?
(b) A sample of 41 boards is randomly selected. What is the probability that their mean length is greater than 105.24 inches?
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