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Unformatted text preview: W Q = L Q = ( / ) s ( s 1)!( s ) 2 P Mean time in the system: W Sys = W Q + 1 Mean number in system: L Sys = W Sys = L Q + Probability an arriving customer receives service: 1 Proportion of time all servers are idle: P M/M/s/s P n probability of n in the system: P = 1 + s n =1 n n ! n 1 , P n = n n ! n P for n = 1 ,...,s , and P n = 0 for n > s Mean number in system: s n =1 nP n Mean number in queue: 0 Mean time in the system: 1 / for customers who get in! Mean waiting time in queue: 0 Probability an arriving customer receives service: 1 P s Proportion of time all servers are idle: P...
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- Fall '09