The scheduling manager of an electricity supply company knows that the number of emergency calls follows a Poisson distribution with an average of 7 calls per week (7 days)

i. What is the probability that the company will receive exactly 2 emergency calls during a specified week?

A 0.030 B 0.970 C 0.023 D 0.993

ii. What is the probability that there will be at least four emergency calls on a given day?

A 0.173 B 0.918 C 0.996 D 0.019