Page 52 - Fundamentals of Probability and Statistics for Engineers
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Basic Probability Concepts                                       35

               for  j ˆ  1, 2, 3, where S j  is the event that a driver is stopped by the jth light. We
               assume a ‘one-light’ memory for the system. By means of the tree diagram,
               determine the probability that a driver:
               (a) Will be delayed by all four lights.
               (b) Will not be delayed by any of the four lights.
               (c) Will be delayed by at most one light.
































































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