Mathematics, 21.12.2019 04:31 bigblow
The lengths of lumber a machine cuts are normally distributed with a mean of 100 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 100.12 inches? (b) a sample of 41 boards is randomly selected. what is the probability that their mean length is greater than 100.12 inches?
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