Telephone calls arrive at the information desk large computer software company at a rate of 15 per hi
a. What is the probability that the next call will a within 3 minutes (0.05 hour)?
b. What is the probability that the next call will a within 15 minutes (0.25 hour)?
c. Suppose the company has just introduced an upon version of one of its software programs, and telephone calls are now arriving at a rate of 25 per hour. Give information, what are your answers to (a) and (b)?