As a student drives to school, he encounters a traffic signal. This traffic signal stays green for

Question:

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. Let X1 be the number of times he encounters a green light, X2 be the number of times he encounters a yellow light, and X1 be the number of times he encounters a red light. Find the joint distribution of X1, Xa, and X3.

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...