3.2-6. A certain type of aluminum screen 2 feet in width has, on the average, three flaws in a 100-foot roll. (a) What is the probability that the first 40 feet in a roll contain no flaws? (b) What assumption did you make to solve part (a)?
3.2-6. A certain type of aluminum screen 2 feet in width has, on the average, three flaws in a 100-foot roll. (a) What is the probability that the first 40 feet in a roll contain no flaws? (b) What assumption did you make to solve part (a)?
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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
Transcribed Image Text:3.2-6. A certain type of aluminum screen 2 feet in width
has, on the average, three flaws in a 100-foot roll.
(a) What is the probability that the first 40 feet in a roll
contain no flaws?
(b) What assumption did you make to solve part (a)?
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Step 1
Given that a certain type of aluminum screen 2 feet in width has on the average, three flaws in a 100 feet roll.
Now for finding the required probability we can use the Poisson distribution formula
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