Calculate the expected time and variance for each activity

Assignment Help Operation Management
Reference no: EM131352438

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.

ACTIVITY

IMMEDIATE PREDECESSOR

TIME (WEEKS)

a

m

b

A

-

9

10

11

B

-

4

10

16

C

A

9

10

11

D

B

5

8

11

a) Calculate the expected time and variance for each activity.

b) What is the expected completion time of the critical path? What is the expected completion time of the other path in the network?

c) What is the variance of the critical path? What is the variance of the other path in the network?

d) If the time to complete path A-C is normally distributed, what is the probability that this path will be finished in 22 weeks or less?

e) If the time to complete path B-D is normally distributed, what is the probability that this path will be finished in 22 weeks or less?

f) Explain why the probability that the critical path will be finished in 22 weeks or less is not necessarily the probability that the project will be finished in 22 weeks or less.

Reference no: EM131352438

Questions Cloud

Create a powerpoint presentation outlining travel regulation : Please use the following links to create a powerpoint presentation outlining travel regulations and safety tips for driving in Poland. The presenation needs to be alteast 20 Slides.
Write a response about the given post : Physical neglect encounters the greatest form of neglect. It refers to the failure of providing the child with the basis needs such as food, clothing, and shelter. This type of neglect can also involve the abandonment of a child, or leaving the ch..
Smallest living subunit of an organism : The body has numerous amounts of cells. Cells are the smallest living subunit of an organism. Cells are made up by even smaller organelles. For example the cilia of the trachea is psuedostratified squamous epithelium which means it is flat, it has..
What is the minimum stagnation pressure required : A blowdown wind tunnel exits to atmospheric pressure. In the working section where the cross-sectional area is 0.04 m2 , the flow has a Mach number of 3 and a pressure of 0.3 × 105 P a.
Calculate the expected time and variance for each activity : 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. Calculate the expected time and variance for each activity
Write a response about the given post : Child abuse and abuse is not restricted to a specific age and can happen in the newborn child, baby, preschool, and school-age years. Child abuse and disregard happens in a scope of circumstances, for a latitude of reasons. Kids are infrequently s..
What are the phases of a typical strategic plan : HLS420- What are the phases of a typical strategic plan? How do they differ between goals-based, issues-based, and organic approaches to strategic planning?
Transposition of the great vessels : Hannah, a new born baby, needs surgery because she was born with an aorta that arises from the right ventricle and pulmonary trunk that issues from the left ventricle, a condition called transposition of the great vessels. What are the physiologi..
Blue water systems is analyzing project with cash flows : Blue Water Systems is analyzing a project with the following cash flows. Should this project be accepted based on the discounting approach to the modified internal rate of return if the discount rate is 14 percent? Why or why not?

Reviews

Write a Review

Operation Management Questions & Answers

  Book review - the goal

Operations Management is about a book review. Title of the book is "Goal". This book has been written by Dr. Eliyahu Goldartt. The book has been appreciated by many as one of those books which offers an insight into the operations and strategic capac..

  Operational plan in hospitality enterprise

Operational plan pertaining to a hospitality enterprise is given in detail in the solution. The operational plan is an important plan or preparation which gives guidelines regarding the role and responsibilities of each and every operation at all lev..

  Managing operations and information

Recognise the importance of a strategic approach to the development and deployment of organisational information systems. Demonstrate an understanding of the importance of databases and their integration to the organisation's overall information mana..

  A make-or-buy analysis

An analysis of the holding costs, including the appropriate annual holding cost rate.

  Evolution and contributor of operations management

Briefly explain Evolution and contributor of Operations management.

  Functions and responsibilities of an operations manager

A number of drivers of change have transformed the roles, functions and responsibilities of an operations manager over recent years. These drivers have not only been based on technological innovations but also on the need for organisations to develop..

  Compute the optimal order quantity

Compute the Optimal Order quantity of DVD players. Determine the appropriate reorder point.

  Relationship to operations practice in the organisation

Evaluate problems in operations and identify approaches to overcoming them. Critically evaluate operating plans and identify areas for improvement. Justify, implement and evaluate changes to operations in line with modern approaches.

  A make or buy analysis

Develop a report for Figi Fabricating that will address the question of whether the company should continue to purchase the part from the supplier or begin to produce the part itself.

  Prepare a staffing plan

Prepare a staffing plan showing the change of your unit from medical/surgical staffing to oncology staffing.

  Leadership styles in different organizations

Ccompare the effectiveness of different leadership styles in different organizations

  Risk management tools and models

Be able to understand the concept of risk, roles and responsibilities for risk management and risk management tools and models.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd