The department chair is out of town at o conferenco and you, as the assistant doportmont chair, find yoursef beshogod by docens of atudents needing permintion to get into a very popular (but dosed) class. Bludent arrivals are governed by the Posson dislibution with at mean of 5 minutes. Telling the studente that they cant get into the closed class takes about 3 minutest, and this average in exponanilialy df sititiutint. About how many studenis are waiting outside your office beor and in your olfice?