2. Television units arrive for inspection on a conveyor belt at the constant rate of 5 units per hour. The inspection time takes between 10 and 15 minutes, uniformly distributed. Past experience shows that 20% of inspected units must be adjusted and then sent back for reinspection. The adjustment time is also uniformly distributed between 6 and 8 minutes.

Run a simulation model for 480 minutes to compute the following:

(a) The average time a unit takes until it passes inspection.

(b) The average number of times a unit must be reinspected before it exits the system.