Assignment:
A sandwich shop near campus has a special counter, open from 11 to 1pm, which is used exclusively for selling pre-made sandwiches. The clerk can handle a customer in about one minute. Customers arrive at the rate of 40 per hour on average. How long in minutes does a customer have to wait? What is the average number of customers waiting in line? What is the probability of there being two or more customers in the system?
Find T1, N1, and 1-(Po+P1)
Provide complete and step by step solution for the question and show calculations and use formulas.