In a hair salon, there are 2 hairdressers and there is no waiting space. Customer arrivals follow a Poisson process of rate 2 per hour. The service time follows exponential distributions with mean 15 minutes. The 2 hairdressers are equally skilled. Below is the rate transition diagram where each state is defined as the number of customers in the salon. 0 A = 2 B = 4 C = 2 A D = 8 D In the rate diagram, the value of transition rates are 1 per hour; per hour; per hour; and B per hour. C 2

In a hair salon, there are 2 hairdressers and there is no waiting space. Customer arrivals follow a Poisson process of rate 2 per hour. The service time follows exponential distributions with mean 15 minutes. The 2 hairdressers are equally skilled. Below is the rate transition diagram where each state is defined as the number of customers in the salon