Question: A public bus driver has to go through five major intersections enroute to Terminus-B from Terminus-A. From the past experience the driver has a

A public bus driver has to go through five major intersections enroute

A public bus driver has to go through five major intersections enroute to Terminus-B from Terminus-A. From the past experience the driver has a rough idea about the percentage of time that he has to stop at the intersection red traffic lights as given below. No. of red lights 0 1 2 3 4 5 Appr. chance of stopping 0.05 0.25 0.35 0.15 0.15 0.05 (i) How many red lights does the driver expect to stop during each run? (ii) What is the standard deviation?

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