Mathematics, 01.11.2020 17:00 adrian540
The lengths of lumber a machine cuts are normally distributed with a mean of 105 inches and a standard deviation of 0.7 inch
(a) What is the probability that a randomly selected board cut by the machine has a length greater than 105.21 inches?
b) A sample of 38 boards is randomly selected. What is the probability that their mean length is greater than 105.21 Inches?
(A) Probability is-
(B) Probability is-
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The lengths of lumber a machine cuts are normally distributed with a mean of 105 inches and a standa...
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