Question
In: Operations Management
The estimated times and immediate predecessors for activities in a project are given below in the...
The estimated times and immediate predecessors for activities in a project are given below in the table. Assume that the activity time are independent.
Task Predecessor Optimistic Most Likely Pessemistic
Time (wks) time (wks) time (wks)
Architectural design -- 10 30 45
Software Architectural design 13 15 23
Compilg Software 2 3 4
Hardware Architectural design 15 20 25
Integration Software & Hardware 20 22 24
Bug fixes Integration 3 4 11
a) Draw an activity-on-node network diagram for this project.
b) Identify the critical path and estimate the expected time to complete the project.
c) What is the probability of finishing this project in 77 weeks?
Solutions
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keosha answered 4 months agoRelated Solutions
The estimated times and immediate predecessors for activities in a project are given below in the table....
The estimated times and immediate predecessors for activities in
a project are given below in the table. Assume that the
activity time are independent.
Task Predecessor Optimistic Most
Likely Pessemistic
Time
(wks) time
(wks) time (wks)
Architectural
design -- 10 30 45
Software Architectural
design 13 15 23
Compilg Software 2 3 4
Hardware Architectural
design 15 20 25
Integration Software
&
Hardware 20 22 24
Bug
fixes Integration 3 4 11
a) Draw an activity-on-node network diagram for this
project.
b) Identify the critical path and estimate the expected time to
complete the project.
c) What is the probability of finishing this project
in 77 weeks?
The estimated times and immediate predecessors for the activities in a project at George Kyparis's retinal scanning company are given in the following table.
The estimated times and immediate predecessors for the activities in a project at George Kyparis's retinal scanning company are given in the following table. Assume that the activity times are independent. a) What is the expected completion time of the critical path? What is the expected completion time of the other path in the network? b) What is the variance of the critical path? What is the variance of the other path in the network? What is the project duration (in weeks)? c)...
19. Consider a project consisting of five activities. The immediate predecessors and the activity times are...
19. Consider a project consisting of five activities. The
immediate predecessors and the activity times are summarized as
below:
Activity
Immediate
Predecessor
Activity time (in
days)
A
None
3
B
A
2
C
A
1
D
B, C
3
E
D
4
In CPM, what is the completion time of the project?
A
12 days
B
11 days
C
13 days
20. A forecasting method has produced the following over the
past five months. What is the mean absolute deviation...
A project involves the following activities, their predecessors, and the times (in weeks) associated with each...
A project involves the following activities, their predecessors,
and the times (in weeks) associated with each activity.
Activity
Immediate Predecessor
Optimistic (a)
Most Likely (m)
Pessimistic (b)
A
--
1
2
3
B
--
2
3
4
C
--
3
4
5
D
A
4
5
12
E
B
1
3
5
F
B
3
4
11
G
C
5
6
13
H
D, E
8
9
10
I
F, G
4
5
6
J
H, I
1
1
1...
A project involves the following activities, their predecessors, and the times (in weeks) associated with each...
A project involves the following activities, their predecessors,
and the times (in weeks) associated with each activity.
Activity
Immediate Predecessor
Optimistic (a)
Most Likely (m)
Pessimistic (b)
A
--
1
2
3
B
--
2
3
4
C
--
3
4
5
D
A
4
5
12
E
B
1
3
5
F
B
3
4
11
G
C
5
6
13
H
D, E
8
9
10
I
F, G
4
5
6
J
H, I
1
1
1...
Activities, predecessors and duration for a School Building Project Activity Description Immediate predecessor Duration (days) A...
Activities, predecessors and duration for a School Building
Project
Activity
Description
Immediate predecessor
Duration (days)
A
Clear Site and mobilize labour and equipment
None
5
B
Excavate foundation
A
15
C
Procure materials (sand, cement, chippings etc.)
A
10
D
Pour foundation concrete
B, C
5
E
Mould sandcrete blocks (substructure)
C
5
F
Construct substructure block work
D, E
15
G
Construct superstructure block work
F, H
30
H
Make doors and window frames
I
10
I
Procure and...
The following represents a project that should be scheduled using CPM: IMMEDIATE PREDECESSORS TIMES (DAYS) ACTIVITY...
The following represents a project that should be scheduled
using CPM:
IMMEDIATE PREDECESSORS
TIMES (DAYS)
ACTIVITY
a
m
b
A
—
1
4
7
B
—
1
3
5
C
A
2
5
11
D
A
1
8
9
E
B
1
2
3
F
C,D
1
6
11
G
D,E
1
2
3
H
F,G
2
3
3
b. What is the critical path?
B-E-G-H
A-C-F-H
A-D-F-H
A-D-G-H
c. What is the expected project completion
time? (Round your answer...
Problem 1 A project involves the following activities, their predecessors, and the times (in weeks) associated...
Problem 1
A project involves the following activities, their predecessors,
and the times (in weeks) associated with each activity.
Activity
Immediate Predecessor
Optimistic (a)
Most Likely (m)
Pessimistic (b)
A
--
1
2
3
B
--
2
3
4
C
--
3
4
5
D
A
4
5
12
E
B
1
3
5
F
B
3
4
11
G
C
5
6
13
H
D, E
8
9
10
I
F, G
4
5
6
J
H, I
1...
A project consisting of six activities has the following precedence constraints. Activity Time (weeks) Immediate Predecessors...
A project consisting of six activities has the following
precedence constraints.
Activity
Time (weeks)
Immediate Predecessors
A
3
B
3
A
C
4
A
D
5
A
E
6
C, D
F
2
B, E
Draw the AOA (activities on the arrows) network diagram for this
project
The table below presents durations, direct costs and immediate predecessors for each activity of a project...
The table below presents durations, direct costs and immediate
predecessors for each activity of a project executed by a
contracting company, under both normal and crash conditions. The
weekly indirect cost is L.E. 40.
Activity Code
Immediate Predecessors
Normal Duration (week)
Normal Total Direct Cost (L.E)
Crash Duration (Week)
Crash Total Direct Cost (L.E)
Total Allowable crash Time (Week)
Cost Slope per Week
(L.E)
A
None
8
325
5
400
3
25
B
None
12
1200
11
1320
1
120...
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