Suppose that the number of accidents occurring on a certain

Suppose that the number of accidents occurring on a certain highway at a rate of 3 per day. Let A be the number of accidents on this highway today.

a) What is the distribution and parameters of A?

b) Find the probability that 3 accidents occur today.

c) Find the probability that 3 or more accidents occur today.

d) Repeat part b) and c) under the assumption that at least 1 accident occurs today.

e) What is the expected number of accidents on this highway in a week?

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