A lumber inspector has found that the face of 2 by 8’s lumber produced at her mill averages 4 knots per board. If the number of knots on a board follows a Poisson distribution, what is the probability of finding more than 3 knots on two 2 by 8’s?

A lumber inspector has found that the face of 2 by 8’s lumber produced at her mill averages 4 knots per board. If the number of knots on a board follows a Poisson distribution, what is the probability of finding more than 3 knots on two 2 by 8’s?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

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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Question

A lumber inspector has found that the face of 2 by 8’s lumber produced at her mill averages 4 knots per board. If the number
of knots on a board follows a Poisson distribution, what is the probability of finding more than 3 knots on two 2 by 8’s?

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