Buster's Burger is a hamburger restaurant where customers form a single line for the onecashier. The average number of arrivals is 1 per minute and the Poisson distribution accuratelydefines this rate. The average time to serve a customer is 30 seconds, and the exponentialdistribution may be used to describe the distribution of service times.a) What are and in this situation?b) Using Kendall notation, what type of queuing system is this?c) What percentage of time is the cashier busy?d) What