Question $2$:Customers arrive at a common queue at the coffee station with two identical coffee machines in a busy mall at the rate of $48$ per hour, following Poisson distribution. Each customer mixes his or her specialty coffee taking $2$ minutes on an average following an exponential process. What is the expected number of customers in the system at this coffee station?infinity$2\mathrm{.}8442\mathrm{.}4444\mathrm{.}4443$