Customer arrive at a two-serves service station according to a Poisson process with rate À. Whenever a new customer arrives, any customer that is in the system immediately departs. A new arrival enters service first with server 1 and then with server 2. If the service times at the servers are independent exponentials with respective rates //, and //2, what proportion of entering customers completes their service with server 2?
A) M Mi

//, + A/ij + A
B) Mi+*
//2 //j+A
C) Mi
//, + A
/ J
D)

Answer