A particular long traffic light on your morning commute is green 30% of the time that you approach it. Assume that each morning represents an independent trial.
a. Over 5 morning, what is the probability that the light is green on exactly one day?
b. Over 20 mornings, what is the probability that the light is green on exactly four days?
c. Discuss the comparsion between part(a) and part (b)