Two technicians, working separately, monitor a group of 5 computers that run an automated manufacturing facility. It takes an average of 15 minutes (exponentially distributed) to adjust a computer that develops a problem. Computers run for an average of 85 minutes (Poisson distributed) without requiring adjustments. Determine the following:

a) The average number of computers waiting for adjustment.

b) The average number being adjusted.

c) The average number of computers not in working order. P