Understand and run calculations of a statistical problem and appropriately present it for a professional context. You will also demonstrate your ability to edit a professional document to assure it is clear, complete and concise, following the direction provided in the Legal Memorandum Guide. Proofread and edit your pre-writing document for grammar and spelling PRIOR TO TURNING IT IN (you may use an external grammar tool to help with this. This assignment will require you to:

Integrate document changes documented in your revision plan – You will revise the memorandum part of your document to address any areas of weakness. This should include but is not limited to, adding missing content, completing the flow of your logic in the analysis section, and fixing any formatting errors or omissions. You are not limited to suggestions of your group peers so you may modify the document in any way you feel you can improve it to be meet the requirements of the assignment.
Review revision integration. Read your revised document to be sure the work has been well integrated. Determine if you feel you need any further revisions.
Proofread and edit.
To complete this assignment you will use:

The Legal Memorandum Template Preview the document You should already have a draft using this document, so you should not need to download this again.
The Legal Memorandum Guide – tPreview the documenthis will provide guidance on the content of the memorandum
The problem description below – this is the statistical problem you will address.
You may also reference the Legal Memorandum exemplar Preview the documentto see what the completed assignment will look like.

What will you be graded on? (be sure to review the assignment rubric)

You will be expected to use the Legal Memorandum Guide and example to include all the required elements in your memorandum. A particular challenge of the assignment is the explanation of the method used for calculations; why it is appropriate, and which option was selected and why.
You will be expected to complete a document that incorporates flow (Links to an external site.) within the sentences, in the paragraphs, and at the document level.
You will be expected to revise your original draft to incorporate what you presented in the revision plan.
Before turning in the work you will review the document for flow at the sentence, paragraph, and document level.
You will need to complete a statistical calculation using the correct approach, arrive at the correct answer, and use the findings in a professional way to develop a recommendation.
Clarity, conciseness, and accuracy – While clarity and conciseness are a concern for the entire document, the memorandum subject line (RE), the question presented, and the brief answer will be closely evaluated on the accuracy of your statements, and the clarity and conciseness of your document elements. (Be sure you understand the difference between liability and negligence.)
Addressing your audience – Your document must be worded in a way where your audience will understand, believe, and be persuaded by what you say. Each of the elements must be worded in a way that is complete and coherent to an outside reader who is likely not an engineer or statistician. (Finding someone like that to review your document and tell you where they are not following your writing can help you with editing. An outside reader may review your document for problem areas but MAY NOT do your writing for you.)
Completeness – All the elements shown in the Legal Memorandum guide must be included in the correct sequence and format.
Problem Description: Critical comparison of opposing claims, analytical thinking, and problem-solving

You are being brought in as an expert witness in a class action lawsuit (Links to an external site.) – Thomas v. True Car Parts Corporation. Using your engineering background you are being asked to provide an argument as to the liability or not of Trusted Car Parts for the design and production of their shafts used in fuel pumps currently in many automobiles from multiple manufacturers.

Shaft wear in excess of 3.50 microns could lead to catastrophic failures of a certain model fuel pump in extreme weather conditions. Engineers for the manufacturer of the shafts claim that the shaft wear is within acceptable limits. Lawyers representing a class action legal suit filed against the company feel that recent vehicle failures for vehicles with this shaft are due to faulty bearings causing abnormal wear and, thus, feel that the company should pay for the necessary vehicle repair and parts replacement.

The amount of shaft wear (in microns.) after a simulated mileage of 250,000 miles was determined for each of n = 45 fuel pumps having copper lead as a bearing material, resulting inx-1.png and s = 1.25. Use the appropriate hypothesis test at level .01 to determine if the shaft wear is within acceptable limits. Please state any assumption you have made, if necessary.

Conduct the appropriate hypothesis test. What determined your choice of the alternative hypothesis? Whose claim would you support?
Be sure to present in plain language the logic of your statistical approach clearly and completely to convince the Judge and jury of your position.
Write your response as if you were presenting evidence as an unbiased expert witness.
Audience: Your document is addressed to the judge in the case – The Honorable Fahimeh Hamidi, and copied (CC) to Thierry Reints, Clerk of the Court, Mikaela Booth, Plantiffs’ Counsel, and Jon Grabinkski, Defendant’s Counsel

As the expert witness for this case, the jury who will be reviewing the case documents is an important audience even though they are not formally addressed in the document. This audience is assumed not to have the specific technical knowledge of the field the witness is explaining. The expert witness must persuade the audience of their expertise and their presentation of the case is the most credible assessment of the facts possible.