Barber college is the best deal in town! for only $5, you can get a shampoo and cut by any one of four untrained stylists completed in 7.5 minutes on average. perhaps this is why customers show up on average two minutes apart (both interarrival times and service times are exponentially distributed). management is concerned about the waiting time for customers and decides to train one more student. if the arrival and service rates remain the same as in the original scenario, what happens to the number of customers in the system?

James is an employee in the widget inspection department of xyz systems, a government contractor. james was part of a 3-person inspection team that found a particular batch of widgets did not meet the exacting requirements of the u.s. government. in order to meet the tight deadline and avoid penalties under the contract, james' boss demanded that the batch of widgets be sent in fulfillment of the government contract. when james found out, he went to the vice president of the company and reported the situation. james was demoted by his boss, and no longer works on government projects. james has a: