The technician monitors the group of five computers which run the automated manufactoring facility. It takes the average of 15 minutes (exponentially distributed) to adjust the computer which develops the problem. The computers run for the average of 85 minutes (poisson distributed) without needing adjustments. Determine (i) average number of computers waiting for adjustments? (ii) average number of computers not in working order? (iii) probability system is empty? (iv) average time in quere? (v) average time in system?