Advertising Campaign Project Scenario

Use the data given below for all questions in this scenario.

An advertising manager developed the network diagram shown below for a new advertising campaign. In addition, the manager gathered the time information for each activity, as shown in the accompanying table.

Activity information:

All times given in the table are in weeks. E.g. Optimistic time for activity A is 1 week.

Activity	Optimistic time	Most likely time	Pessimistic time	Immediate Predecssor(s)
A	1	4	7	None
B	2	6	7	None
C	3	3	6	B
D	6	13	14	A
E	3	6	12	A, C
F	6	8	16	B
G	1	5	6	E, F

Calculate the expected time and variance for each activity.

1. The expected time for activity B is (round your answer to 2 decimal places):

2. The variance for activity C is (round your answer to 2 decimal places):

3. The expected time for activity F is:

4. The variance for activity D is (round your answer to 2 decimal places):

5. The critical path for this advertising campaign is:

		A-D-E
		A-D-E-G
		B-F-G
		B-C-E-G

6. The expected time (duration) to complete the advertising campaign (project) is (in weeks):

7. What is the probability of finish the project within 23 weeks (enter your answer rounded to 3 decimal places)?