2.1 The probability that a student must stop at any one traffic light going to NUST from Havana is 0.2.There are 15 traf
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2.1 The probability that a student must stop at any one traffic light going to NUST from Havana is 0.2.There are 15 traf
2.1 The probability that a student must stop at any one traffic light going to NUST from Havana is 0.2.There are 15 traffic lights on the journey. (a) What is the probability that a student will stop at exactly 2 of the 15 sets of traffic lights? [4] (b) What is the probability that a student will stop at 3 or more of the 15 sets of traffic lights? [51 2
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