Mathematics, 09.03.2021 06:50 emhunter101

The lengths of lumber a machine cuts are normally distributed with a mean of 94 inches and a standard deviation of 0.4 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 94.08 inches?
(b) A sample of 45 boards is randomly selected. What is the probability that their mean length is greater than 94.08 inches?
(a) The probability is
(Round to four decimal places as needed.)

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The lengths of lumber a machine cuts are normally distributed with a mean of 94 inches and a standar...