Multiple choice

1. Which of the following is usually the most difficult cost to determine? 

Service cost

Facility cost

Calling cost

Waiting cost

None of the above

2. Given an activity's optimistic, most likely, and pessimistic time estimates of 3, 6, and 9 days respectively, compute the PERT variance for this activity. 

3

1

9

6

none of the above 

3. For a local hardware store, the total service cost is $10 per hour per employee and the waiting cost is $8 per hour per customer. Customers arrive at a rate 

 per hour. On average a customer waits a total of 6 minutes. If a single clerk is employed, what is the total cost of the system? 

$26.00

$106.00

$16.00

$10.6

none of the above

4. In a PERT network, thef earliest (activity) start time is the: 

earliest time that an activity can be finished without delaying the entire project.

latest time that an activity can be started without delaying the entire project.

earliest time that an activity can start without violation of precedence requirements.

latest time that an activity can be finished without delaying the entire project.

none of the above.