The lengths of lumber a machine cuts are normally distributed with a mean of 101 inches...
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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 0.6 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 101.24 inches? (b) A sample of 40 boards is randomly selected. What is the probability that their mean length is greater than 101.24 inches? (a) The probability is 1 (Round to four decimal places as needed.) (b) The probability is (Round to four decimal places as needed.) The lengths of lumber a machine cuts are normally distributed with a mean of 101 inches and a standard deviation of 0.6 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 101.24 inches? (b) A sample of 40 boards is randomly selected. What is the probability that their mean length is greater than 101.24 inches? (a) The probability is 1 (Round to four decimal places as needed.) (b) The probability is (Round to four decimal places as needed.)
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Related Book For
Elementary Statistics Picturing the World
ISBN: 978-0321911216
6th edition
Authors: Ron Larson, Betsy Farber
Posted Date:
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