. A Customer support center for a computer manufacturer receives an average of 1.5 phone calls every 5 minutes. Assume the number of calls received follows Poisson distribution. (20 pts.)

a. What is the probability that no calls will arrive during the next 5 minutes?

b. What is the probability that three of more calls will arrive during the next 5 minutes?

c. What is the probability that three calls will arrive during the next 10 minutes?

d. What is the probability that no more than 2 calls will arrive during the next 10 minutes?