A closed-group of 5 customers frequents a two-server service station in the following manner: When a customer arrives, he or she either enters service if either of the two servers is free or joins the queue otherwise. Upon completing service, the customer departs the system and stays away for an exponential amount of time with mean 1.25 hours (rate is one over the mean). The service times are exponential with mean 0.5 hours. The number of people in the system can be modeled as a Birth and Death process. What are the birth rates?
What are the death rates?

Faldo corp sells on terms that allow customers 45 days to pay for merchandise. its sales last year were $325,000, and its year-end receivables were $60,000. if its dso is less than the 45-day credit period, then customers are paying on time. otherwise, they are paying late. by how much are customers paying early or late? base your answer on this equation: dso - credit period = days early or late, and use a 365-day year when calculating the dso. a positive answer indicates late payments, while a negative answer indicates early payments. a. 21.27b. 22.38c. 23.50d. 24.68e. 25.91b