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?