Discuss program to monitor the quality of its transformers

Assignment Help Operation Research
Reference no: EM131740218

Addendum

We have always estimated how many transformers will be needed to meet demand. The usual method is to look at the sales figures of the last two to three months and also the sales figures of the last two years in the same month. Next make a guess as to how many transformers will be needed. Either we have too many transformers in stock, or there are times when there are not enough to meet our normal production levels.

It is a classic case of both understocking and overstocking. Ratnaparkhi, operations head, has been given two charges by Mittra. First, to develop an analysis of the data and present a report with recommendations. Second, "to come up with a report that even a lower grade clerk in stores should be able to fathom and follow."

In an effort to develop a report that is understood by all, Ratnaparkhi decides to provide incremental amounts of information to his operations manager, who is assigned the task of developing the complete analyses

A-Cat Corporation is committed to the pursuit of a robust statistical process control (quality control) program to monitor the quality of its transformers. Ratnaparkhi, aware that the construction of quality control charts depends on means and ranges, provides the following descriptive statistics for 2006 (from Exhibit 1).

  2006  
     
Mean   801.1667
Standard Error 24.18766
Median   793
Mode   708
Standard    
Deviation 83.78851
Sample Variance 7020.515
Kurtosis   -1.62662
Skewness 0.122258
Range   221
Minimum 695
Maximum 916
Sum   9614
Count   12

The operations manager is assigned the task of developing descriptive statistics for the remaining years, 2007-2010, that are to be submitted to the quality control department.

A-Cat's president asks Mittra, his vice-president of operations, to provide the sales department with an estimate of the mean number of transformers that are required to produce voltage regulators. Mittra, recalling the product data from 2006, which was the last year he supervised the production line, speculates that the mean number of transformers that are needed is less than 745 transformers. His
analysis reveals the following:

t = 2.32
p = .9798

This suggests that the mean number of transformers needed is not less than 745 but at least 745 transformers. Given that Mittra uses older (2006) data, his operations manager knows that he substantially underestimates current transformers requirements. She believes that the mean number of transformers required exceeds 1000 transformers and decides to test this using the most recent (2010) data.

Initially, the operations manager possessed only data for years 2006 to 2008. However, she strongly believes that the mean number of transformers needed to produce voltage regulators has increased over the three-year period. She performs a one-way analysis of variance (ANOVA) analysis that follows:

2006 2007 2008
779 845 857
802 739 881
818 871 937
888 927 1159
898 1133 1072
902 1124 1246
916 1056 1198
708 889 922
695 857 798
708 772 879
716 751 945
784 820 990

Anova: Single Factor              
                   
SUMMARY                 
  Groups   Count Sum Average Variance      
                   
    2006 12 9614 801.1667 7020.515      
    2007 12 10784 898.6667 18750.06      
    2008 12 11884 990.3333 21117.88      
                   
                   
                   
ANOVA                  
                   
  Source of Variation   SS df MS F P-value F crit
                   
  Between Groups   214772.2 2 107386.1 6 6.870739 0.003202 3.284918
  Within Groups   515773 33 15629.48      
  Total     730545.2 35        

The results (F = 6.871 and p = 0.003202) suggest that indeed the mean number of transformers has  changed over the period 2006-2008. Mittra has now provided her with the remaining two years of data (2009 and 2010) and would like to know if the mean number of transformers required has changed over the period 2006-2010.

Finally, the operations manager is tasked with developing a model for forecasting transformer requirements based on sales of refrigerators. The table below summarizes sales of refrigerators and transformer requirements by quarter for the period 2006-2010, which are extracted from Exhibits 2 and 1 respectively.

Sales of Refrigerators Transformer Requirements
3832 2399
5032 2688
3947 2319
3291 2208
4007 2455
5903 3184
4274 2802
3692 2343
4826 2675
6492 3477
4765 2918
4972 2814
5411 2874
7678 3774
5774 3247
6007 3107
6290 2776
8332 3571
6107 3354
6729 3513

Instruction

Submit a statistical analysis report and recommendations to management. It must be 10-12 pages in length (plus a cover page and references) and must be written in APA format

Include at least six references , cited in APA format.

Specifically, the following critical elements must be addressed:

V. Recommend operational improvements to stakeholders:

A. Summarize your analysis plan for both internal and external stakeholders. Be sure to use audience-appropriate jargon when summarizing for both groups of stakeholders

B. Explain how your decision addresses the given problem and how you reached that decision. Be sure to use audience-appropriate jargon for both groups of stakeholders.

C. Justify why your decision is the best option for addressing the given problem to both internal and external stakeholders and how it will result in operational improvement. Be sure to use audience-appropriate jargon when communicating with stakeholders.

Reference no: EM131740218

Questions Cloud

Macro-trends affecting future of the us healthcare system : Condense the findings of your paper to a brief presentation for delivery to the Board of Directors - presentation without the direct participation of any member
Countries that levy tariffs on wheat imports : If the United States exports wheat to foreign countries that levy tariffs on wheat imports, the probable result is that the price of wheat will
What are the main reasons for grounding : What are the main reasons for grounding? How is grounding related to safety and effective operation of circuit protection devices such as circuit breakers.
Define the various image denoising techniques : Image denoising Implement at least two of the various image denoising techniques described in this chapter and compare them on both synthetically noised image.
Discuss program to monitor the quality of its transformers : A-Cat Corporation is committed to the pursuit of a robust statistical process control (quality control) program to monitor the quality of its transformers
What type of knowledge or experiences do you have : What type of knowledge or experiences do you have with regard to day-to-day operational duties performed by managers and directors.
Describe several techniques that are used for flood proofing : Write a 3 page paper describing several techniques that are used for flood proofing. Comment on some pros and cons regarding each one.
Review case related to image deblocking-challenging : Image deblocking-challenging. Now that you have some good techniques to distinguish signal from noise, develop a technique to remove the blocking artifacts.
Describe how you would organize the layout for a classroom : Assume the role of a director and apply these principles toward the design of the learning space at the child development center you manage.

Reviews

Write a Review

Operation Research Questions & Answers

  Proprietary methods for conducting research

Minute Maid sees research as the fundamental first step in any business decision, and it created proprietary methods for conducting research. At what level of the hierarchy of business decision makers does Minute Maid operate?

  Illustrate what are the alternatives for solving business

Do you agree with Maggie Brown's accounts receivable policy? Illustrate what are the alternatives for solving the business's cash problem?

  Calculate the observed mean distance from the point

Calculate the observed mean distance from the point, Calculate the mean and variance of the 5,000 simulated

  Explanation about employee career management

In a world of fast-paced decisions, high-employee turnover, and employees feeling like they must "jump ship" to increase salaries substantially.

  Principles of learning in developing a lecture

Explain how you would apply our principles of learning in developing a lecture, say, onorientation and training?

  Used computer system sales inc

1.      Used Computer System Sales, Inc. (UCSSI), which began its operations in July of 2007, specialized in the purchase, sale, distribution, upgrade, and repair of new, as well as refurbished, equipment for the Sun Microsystems/Oracle America marke..

  Outline the components of a typical fuel

Search the Internet for pertinent information that will satisfy and demonstrate, "Outline the components of a typical fuel and oil system and their functions. Explain proper management procedures for fuel and oil systems."Post the URL for the webs..

  Unexpected happens-is your supply chain prepared

Click the link below and read "The Unexpected Happens: Is Your Supply Chain Prepared?" from December 2006 (locate the article by entering the title in the site's search tool).

  Analyze the code of ethics

Choose a Code of Ethics from your area of interest in your present work or future career and summarize this code and analyze the Code of Ethics you have chosen to determine what you think are its strengths and weaknesses. Explain why for both

  Show all work by describing variables stating assumptions

show all work by describing variables stating assumptions illustrating model and showing output solution to the

  Prepare a presentation-organizational structure presentation

Identify the audience, for example a board of directors or a new management team following an acquisition or a merger, for your final presentation due in Week Five. Provide a rationale for your audience selection.Develop an action plan for the fin..

  Formulate an lp to maximize feedcos profit

. Feedco can purchase up to 1,000 lb of wheat at 50/lb and up to 800 lb of alfalfa at 40/lb. Demand for each type of feed is unlimited. Formulate an LP to maximize Feedcos profit.

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