As a student drives to school, he encounters a trac
Chapter 7, Problem 5.19(choose chapter or problem)
As a student drives to school, he encounters a traffic signal. This traffic signal stays green for 35 seconds, yellow for 5 seconds, and red for 60 seconds. Assume that the student goes to school each weekday between 8:00 and 8:30 a.m. Let \(X_1\) be the number of times he encounters a green light, \(X_2\) be the number of times he encounters a yellow light, and \(X_3\) be the number of times he encounters a red light. Find the joint distribution of \(X_1\), \(X_2\), and \(X_3\).
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