1) "During finals week, students arrive randomly at the help desk of the computer lab. There is only technician due to budget cuts, and the time required to provide service varies from student to student. The avg arrival rate is 15 students per hour, and the average service rate is 20 students per hour.Arrival rates have been found to follow the Polsson distribution, and the service time follow the exponential distribution. What is the average time spent waiting in line for each student.
A) 15min
b) 20min
c) 5min
d) 9min
2) "In the previous example, what is the average number of students in the line?"
a) 2.25 students
b) 5 students
c) 15 students
d) 20 students