1. Generate a manual simulation for customers arriving at a single-queue, single-server system given the data shown in the table. Calculate average system time, average queue time and resource utilization based on the system for 18 min.

# Customer	Interarrival time(min)	Service times (min)
1	2	6
2	5	4
3	3	1
4	3	3
5	3	2
6	2	1

# Customer	Interarrival time(min)	arrival	Begin	end	queue	System	Service times (min)
1	2	2	2	8	0	6	6
2	5	7	8	12	1	5	4
3	3	10	12	13	2	3	1
4	3	13	13	16	0	3	3
5	3	16	16	18	0	2	2
6	2	18	18	20			1

Ave System time =( 6+5+3+3+2)/5=3.8 min

Ave Queue time = 3/5=0.6 min

Average resource utilization = 16/18 = 0.888889 = 89%