21. Given the following network with activities and times estimated in days.

(see attached file for diagram and chart)

Activity
Optimistic Most Probable
Pessimistic
A 2 5 6
B 1 3 7
C 6 7 10
D 5 12 14
E 3 4 5
F 8 9 12
G 4 6 8
H 3 6 8
I 5 7 12
J 12 13 14
K 1 3 4

a. What are the critical path activities?
b. What is the expected time to complete the project?
c. What is the probability the project will take more than 28 days to complete?

Given the network with activities and times estimates the solution finds out the critical path activities, calculates the expected time to complete the project and the probability the project will take more than 28 days to complete.

1) Organizers for a political convention have determined ten activities that must be done before the convention begins.
Activity Immediate Predecessors Time (Weeks)
A --- 10
B A 4
C B 2
D B 2
E

Construct a PERT network and answer each of the following questions using the table attached. (table represents a project to convert a 20-bed unit in a nursing home to accommodate patients with dementia)
a) What is the expected project completion date?
b) What is the scheduled start and completion date for each activity?
c)

Please refer to the network activity times shown in days.
a) Find the criticalpath
b) If the project is shorted by four days, show which activities, in order of reduction, would be shortened and the resulting cost.

A project has the following precedence realationship and activity times
Activity Activity Time Immediate Predecessors
A 4 -
B 10 -
C 5 A
D 15 B, C
E 12 B
F 4 D
G 8 E
H 7 F,G
A. Draw a Network Diagram
B. Calculate the slack for each activity, Which Activity are on the Criticalpath

In the project network shown in the follwoing figure, the number alongside each activity represents known duration in weeks.
Determine the following
earliest and latest start and finish times
slack for activitiescriticalpath

In one of the little-know battles of the Civil War, General Tecumseh Beuregard lost the Third Battle of Bull Run because his preparations were not complete when the enemy attacked. If the criticalpath method had been available, the general could have planned better. Suppose that the following planning network, with activity t

1. Develop a network drawing for Hill Construction & determine the criticalpath. How long is the project expected to take?
2. What is the probability of finishing in 270 days?
3. If it's necessary to crash to 250 or 240 days, how would Hill do so, and at what costs? As noted in the case, assume that optimistic time estimates

This is a re-post for a problem. I'm confused with the OTA's answer because in the response that I received (attached as 44279-business-CPM, PERT(1).xls), Activity F follows C and D, but in the problem definition, it is supposed to follow A and C. Please help me clarify this...
I have also attached what I came up with for t

Construct a network information from the information in the following table and identify all the paths in the network, compute the length of each, and indicate the criticalpath. Please see attachment.