bo2045628 bo2045628

14-04-2024
Mathematics

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The lengths of lumber a machine cuts are normally distributed with a mean of 9999 inches and a standard deviation of 0.40.4 inch.
(a) What is the probability that a randomly selected board cut by the machine has a length greater than 99.1899.18 inches?
(b) A sample of 4343 boards is randomly selected. What is the probability that their mean length is greater than 99.1899.18 inches?
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Part 1
(a) The probability is enter your response here.
b) The probability is

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