Q$2.(10$ p$.)$ A two$-$server operation with two service windows and two employees $($one employee per window$).$ The employee stationed at each window fills the order and takes the money from the customer. The average service time for this alternative is also $1\mathrm{.}5$ minutes for each server. This service operation assumes that the two service windows are located at the opposite sides of the restaurant building with two separate lanes leading to them, i$.$e$.,$ the arriving customers must choose from the very beginning $($after placing their order$)$ which lane they will follow $($with no chance for backing up or switching to the other lane$).$

$-$ What is the average number of cars waiting for service in the line?

$-$ What is the average number of cars in the system?

$-$ What is the average time $($in minutes$)$ a car waits for service in the line?

$-$ What is the average time $($in minutes$)$ in the system?

$-$ What is the utilization factor of the system?