# operations research

posted by .

4. An R & D project has a list of tasks to be performed whose time estimates are given in the table
R & D project Time estimates
Activity
i - j
Activity
Name
Time
(days)
To
Time
(days)
tm
Time
(days)
tp
1-2 A 4 6 8
1-3 B 2 3 10
1-4 C 6 8 16
2-4 D 1 2 3
3-4 E 6 7 8
3-5 F 6 7 14
4-6 G 3 5 7
4-7 H 4 11 12
5-7 I 2 4 6
6-7 J 2 9 10
a. Draw the network diagram for the R&D project
b. Find the critical path and calculate the project duration
c. Find the probability that the project is completed in 19 days.
2
3
5

## Similar Questions

1. ### Project Management

What kind of project-scheduling tools are typically used in your Company to establish time phasing of project tasks?
2. ### College: Modern System Analysis and design

Construct a Gantt chart and network diagram for a project you are or will be involved in. Choose a project of sufficient depth from work, home, or school. Identify the activities to be completed, determine the sequence of the activities, …
3. ### operational management

Activity Time Predecessor(s) A 3 None B 4 A C 3 B D 5 B E 10 C, D F 3 E G 6 E H 5 G, F Please assist with finding the ES, EF, LS, LF and slack time for ALL activities. also, the critical path?
4. ### project mgmt

A project has an expected duration of 34 weeks with a critical path variance of 6. Suppose the project network is given and the critical path is identified on the network. Suppose the normal time, crash time, and the associated cost …
5. ### IT

A project has been defined to contain the following list of activities along with their required times for completion. Activity No. Activity Time (Weeks) Immediate Predecessors 1 Colect requirements 2 - 2 Analyze processes 3 1 3 Analyze …
6. ### Statistics (random variable)

A contractor is interested in the total cost of a project on which he intends to bid. He estimates that materials will cost rs 25,000 and that his labour will be rs900 per day. If he the project takes X days to complete,the total cost …
7. ### Math

Three people who work full-time are to work together on a project, but their total time on the project is to be equivalent to that of only one person working full-time. If one of the people is budgeted for one-half of this time to …
8. ### math

Tom Schriber, a director of personnel of Management resources, Inc. is in the process of designing a program that its customers can use in the job finding process. Some of the activites include preparing resumes, writing letters, making …
9. ### Math

Michael has a science project due. He knew that it would take him 4 hours to complete the project. He needed to spend 50% of his time on his experiment, 40% of his time on his analysis, and 10% on putting his project together. What …
10. ### Finance

The projected revenues and costs that form the basis of the potential for a project's acceptance or rejection are estimates of ______________. A. Future activity B. Past activity C. Known activity D. Current activity

More Similar Questions