he following questions make use of the relations in Sections $6\mathrm{.}4$ and $6\mathrm{.}5.$ No particular

assumptions are made about the distribution of interarrival or service times.

a$.$ If a factory maintains an average in$-$process inventory equivalent to $300$ work order, or

jobs, and an average job spends six weeks in the factory, what is the production rate of the

factory in units of jobs per year?

b$.$ If an average of $3,000$ people per day pass through an airport lobby, and the average time

spent in the lobby is an hour and a half, what is the average number of people occupying the

lobby?

c$.$ If a queuing system has three servers,