The lengths of lumber a machine cuts are normally distributed with a mean of 92inches and a standard deviation of 0.6 inch.
The lengths of lumber a machine cuts are normally distributed with a mean of 92inches and a standard deviation of 0.6 inch.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 22PFA
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Question
The lengths of lumber a machine cuts are normally distributed with a mean of
92inches and a standard deviation of 0.6
inch.(a) What is the probability that a randomly selected board cut by the machine has a length greater than
92.19
inches?(b) A sample of 41
boards is randomly selected. What is the probability that their mean length is greater than
boards is randomly selected. What is the probability that their mean length is greater than
92.19 inches?
The probability is?
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