Question

Traffic light on my morning commute is green 20% of the time that I approach it in the morning. a) Over 5 mornings, what is the probability that the light

is green on exactly 1 day? b) Over 20 mornings, what is the probability that the light is green on exactly 4 days? c) Over 20 mornings, what is the probability that the light is green on more than 4 days?

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