John Stewart approves study abroad documents. Students must
waitin line with their forms outside John’s office. One student at
a time is allowed in his office and John takes precisely 20 minutes
to evaluate each student’s set of documents. On average 3
studentsper hour go to his office and they spend on average 170
minutes trying to get their forms approved(time waiting in queue
plus time in John’s office having him evaluate their documents).
Onaverage, how many students are waiting outside of John’s office?
(Hint: You do not need to know CVa and CVp to solve this question
but if you want, you can assume that CVa=1 and the
standarddeviation of the processing time is zero.)