The rate of calls to a call center facility is 100 calls per hour. Suppose that every time you call you are told (by an automatic system) how many customers are currently waiting to talk to the representatives. Given you past experience with this call center, you know that on average there are 25 customers in the queue waiting to be served every time you call. Suppose you about to make a call to this call center, how long do you expect to wait before talking to the representative?