Mathematics, 28.10.2021 02:20 kayelynn003
The lengths of lumber machine cuts are normally distributed with mean of 93 inches and a standard deviation of 0.3 inch.
(a) What is the probability that a randomly selected board cut by the machine has a length greater than 93.07 inches?
(b) A sample of 38 boards is randomly selected. What is the probability that their mean length is greater than 93.07 inches?
Answers: 3
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