Question 4: In a city the traffic lights on the main road are set up so that traffic lights are green for 55 seconds, red for 48 seconds, and amber for 17 seconds (the city is in California, so no one stops on amber). (a) What is the chance that you will have to stop at a particular traffic light? (b ) Suppose that there are 10 traffic lights in the main street. What is the expected amount of time you are likely to be stopped at traffic lights if you drive all the way down the main street