Activity Immediate Predecessor Optimistic Time Most-likely time Pessimistic Time
ID: 432194 • Letter: A
Question
Activity
Immediate
Predecessor
Optimistic Time
Most-likely time
Pessimistic Time
A
None
3
6
9
B
A
3
5
7
C
A
4
7
12
D
B
4
8
10
E
C
5
10
16
F
D, E
3
4
5
G
D, E
3
6
8
H
F
5
6
10
I
G
5
8
11
J
H, I
3
3
3
What is the expected time for each activity? (2 points)
What is the variance for each activity? (2 points)
Use both the longest path method and ES/EF; LS/LF method for the following questions
What is the expected project completion time? (2 point)
What are the critical activities? (1 points)
What are the slack values for non-critical activities? (4 points)
What is the probability that the project will be completed in 38 weeks? (2 points)
What is the probability that the project will be completed in 42 weeks? (2 points)
2. Multiple choices (1 point for each)
1) Given this information about an activity: ES = 10, EF = 15, LS = 26, and LF = 31. The amount of slack associated with the activity is ____________________.
Select one:
A. 21
B. 32
C. 16
D. 5
E. 11
2) If a delay in an activity will delay completion of the whole project, the activity ____________________.
Select one:
A. is a dummy
B. is on the critical path
C. is costly
D. has slack value bigger than “0”
E. is represented by a node
3) _____________________ structure the sequencing of activities.
Select one:
A. Precedence relationships
B. Work breakdowns
C. Evaluation of costs
D. Backschedules
E. Crashings
4) Which phase in the project life cycle involves analyzing the project risk?
Select one:
A. conception
B. planning
C. termination
D. execution
E. feasibility analysis or study
5) Which of the following is not characteristic of a project?
Select one:
A. activities have defined precedence relationships
B. has a specific objective
C. typically performed by external consultants
D. has multiple activities
E. to be completed in a specified time period
Activity
Immediate
Predecessor
Optimistic Time
Most-likely time
Pessimistic Time
A
None
3
6
9
B
A
3
5
7
C
A
4
7
12
D
B
4
8
10
E
C
5
10
16
F
D, E
3
4
5
G
D, E
3
6
8
H
F
5
6
10
I
G
5
8
11
J
H, I
3
3
3
Explanation / Answer
PLEASE FIND BELOW ANSWERS TO QUESTION 2 ( MULTIPLE CHOICE QUESTIONS ) :
Therefore Slack associated with the activity = 26 – 10 = 16 or 31 – 15 = 16
ANSWER : C ) 16
Therefore , if a delay in any activity will delay completion of the whole project, the activity is on critical path
ANSWER : B ) IS ON CRITICAL PATH
Therefore, Precedence relationship structure the sequencing of activities
ANSWER : A) PRECEDENCE RELATIONSHIP
ANSWER : E) FEASIBILITY ANALYSIS OR STUDY
Therefore correct answer to the question is “ C. typically performed by external consultants “
ANSWER : C) TYPICALLY PERFORMED BY EXTERNAL CONSULTANTS
ANSWER : C ) 16
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