a pumping station has two identical pumps connected in parallel, each capacble of pumping 3000 gallons/hr. if the faiulre rate and repair rate of each is 0.5 f/hr and 4 r/hr respectively, construct the state space diagram and stochastic transitional probability matriz. Hence evaluate the average hourly obtained of the station had one pump having a capacity of 6000 gallons/hr or three pumps each having a capacity of 2000 gallons/hr?