A math professor has an oce overlooking the Road and they have determined that on average they see 3 cars per month driving the wrong way on the road.

In parts (a) and (b) below, dene the random variable you are working with, and state which distribution your random variable follows.

(a) What is the probability that the during the Spring semester (4 months) the professor will see between 8 and 15 cars (inclusive) driving the wrong way on the road?

(b) The professor knows that in the last 6 months they have seen at least 13 cars driving the wrong way on Ring Road. What is the probability that during these 6 months they saw at least 21 cars driving the wrong way?

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