The lengths of lumber a machine cuts are normally distributed with a mean of 95 inches and a standai deviation of 0 3 in

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The lengths of lumber a machine cuts are normally distributed with a mean of 95 inches and a standai deviation of 0 3 in

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The Lengths Of Lumber A Machine Cuts Are Normally Distributed With A Mean Of 95 Inches And A Standai Deviation Of 0 3 In 1
The Lengths Of Lumber A Machine Cuts Are Normally Distributed With A Mean Of 95 Inches And A Standai Deviation Of 0 3 In 1 (9.44 KiB) Viewed 35 times
The lengths of lumber a machine cuts are normally distributed with a mean of 95 inches and a standai deviation of 0 3 inch. (a) What is the probability that a randomly selected board cut by the machine has a length greater than 95.11 inches? (b) A sample of 45 boards is randomly selected. What is the probability that their mean length is greater than 95.11 inches?
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