Determine the mean waiting time W for an M/M12 system when λ = 2 and µ = 1.2. Compare this with the mean waiting time in an M/M11 system whose arrival rate is λ = 1 and service rate is µ = 1.2. Why is...

Determine the mean waiting time W for an M/M12 system when λ = 2 and µ = 1.2. Compare this with the mean waiting time in an M/M11 system whose arrival rate is λ = 1 and service rate is µ = 1.2. Why is there a difference when the arrival rate per server is the same in both cases?