OPERATIONS MANAGEMENT
Test
1. How do services differ from goods? Identify five ways.
5 marks
2. Susan has a part-time "cottage industry" producing seasonal plywood yard ornaments for
resale at local craft fairs and bazaars. She currently works 8 hours per day to produce 16
ornaments.
a. What is her productivity?
b. She thinks that by redesigning the ornaments and switching from use of wood glue to a
hot-glue gun she can increase her total production to 20 ornaments per day. What is her
new productivity?
c. What is her percentage increase in productivity?
4 (a)What is the objective of critical path analysis?
(b)Define slack.
3 marks
1 mark
1 mark
(c)What are the earliest activity start time and latest activity start time, and how are they
computed?
4 marks
1
(d):
Draw the network diagram.
Identify the activities on the critical path.
What is the duration of the critical path?
10 marks
5 What is the difference between natural and assignable causes of variation?
6 An operator trainee is attempting to monitor a filling process that has an overall average
of 705 cc. The average range is 17 cc. If you use a sample size of 6, what are the upper
and lower control limits for the X-bar and R chart?
6 marks
Table
2