At each of three very dangerous intersections, an average of two crashes occur every week. These occurrences are all independent of one another. Find the probability that, in a given week, exactly two of these three intersections see one crash each

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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At each of three very dangerous intersections, an average of two

crashes occur every week. These occurrences are all independent of

one another. Find the probability that, in a given week, exactly two

of these three intersections see one crash each.

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