Unemployment that arises when people are between jobs is known as:
Frictional unemployment
Frictional unemployment occurs when people are temporarily between jobs or are looking for a better match of skills to the job market.
Let $X(t) =$ number of customers in the system at time $t$ in an $M/M/C$ queueing model, with $C = 3$, arrival rate $\lambda > 0$ and service rate $\mu > 0$. Which of the following is/are true?