Requests arrive at a web server according to a Poisson process with λ = 20 requests per minute. The service times at the web server are proportional to the size of the document requested which is according to a Pareto distribution. The average service time is 2 seconds and the standard deviation of the service time is 5 seconds. Compute the average time for a request to receive a response (i.e., calculate W). Obtain L as well.
L=long-run average number of requests in the system.