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A particularly long traffic light on your morning commute is green 20% of the time that you approach it. assume that each morning represents an independent trial. 1. over five mornings, what is the probability that the light is green on exactly one day? 2. over 20 mornings, what is the probability that the light is green on exactly four days? 3. over 20 mornings, what is the probability that the light is green on more than four days?
Sagot :
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