今天寫考古題，對這題答案有疑問，請求板上高手幫忙解!
題目是:
Consider a system of two infinite queues in series,where each of the two
service facilities has a single server.All service times are independent
and have an exponential distribution,with a mean of 3 minutes at facility
1 and 4 minutes at facility 2.Facility 1 has a Poisson input process with
a mean rate of 10 per hour:
(a) Find the steady-state distribution of the number of customers at
facility 1 and then at facility 2 .
(b)Show the product form solution for the joint distribution of the number
at the respective facilities.
(c)What is the probability that both servers are idle?
(d)Find the expected total number of customers in the system and expected
total waiting time (include service times) for a customer.
感謝再感謝~~
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◆ From: 140.113.114.213
※ 編輯: littlewei328 來自: 140.113.114.213 (02/22 20:29)
※ 編輯: littlewei328 來自: 140.113.114.213 (02/22 20:34)