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The lengths of lumber a machine cuts are normally distributed with a mean of 101 inches and a standard deviation of 0.5 inch. (a)
The lengths of lumber a machine cuts are normally distributed with a mean of 101 inches and a standard deviation of 0.5 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 101.11 inches? (b) A sample of 41 boards is randomly selected. What is the probability that their mean length is greater than 101.11 inches? (a) The probability is. (Round to four decimal places as needed.)
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Elementary Statistics Picturing The World
Authors: Ron Larson, Betsy Farber
6th Edition
0321911210, 978-0321911216
