Consider the following process. Assume that task 1 takes 6 minutes. What is the rush order flow time in this process?

2.

Which of the following statements is true?

		Service and production systems with variability cannot operate at their theoretical capacity
		If the process has variability, and the demand rate is equal to its capacity, the utilization will be higher than 100%
		A process with variability can never have a utilization higher than 80%
		For a process with variability, an increase in coefficient of variation for processing times, other things equal, will lead to decrease of average waiting time.

3.

Which of the following statements is NOT true about the process with variability?

		In a demand constrained process, an increase of the average inter-arrival time will lead to a decrease of the average waiting time.
		If a process is capacity constrained, in a long run all servers will be busy 100% of the time
		For most service systems, aiming for a 80% utilization is a good rule of thumb to keep the waiting time in check.
		If a process is demand constrained, the average number of flow units (or customers) being processed will be equal to the number of servers (i.e., Ip = m)

4.

The Dynac Manufacturing Company produces a particular product in an assembly line operation. One of the machines on the line is a drill press that has a single assembly line feeding into it. Partially complete units arrive at the press at a rate of 30 units per hour, and at any given time there is an average of 8 units at this work station. What is the average time a unit spends at the drill press station? Express your answer in minutes, round to two decimals of needed.

Task 1 (Adam) Task 1 (Bob)