A single-server queuing system with an infinite calling population and a first-come, first-served queue discipline has the

Question:

A single-server queuing system with an infinite calling population and a first-come, first-served queue discipline has the following arrival and service rates (poisson distributed):
λ = 16 customers per hour
µ = 24 customers per hour
Determine P0, P3 L, Lq, W, Wq and U.