# 3.1 Legal Memorandum Pre-Writing Solve a statistics problem – you will solve the statistics problem and include it in this assignment (in the appendix.) – You will use the calculations you complete to inform the recommendation you make for this problem. Answer the problem definition questions included on the first page of the assignment template -through doing this you will articulate an understanding of the problem and what you are being asked to do with that problem, the value of the statistical calculation to addressing the problem, and who the audience you are asked to address is and how their role and status will influence what and how you write your memorandum.

## QUESTION

Memorandum 3

General Education Assignment 2 (#GEA2)

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3.1 Legal Memorandum Pre-Writing Solve a statistics problem – you will solve the statistics problem and include it in this assignment (in the appendix.) – You will use the calculations you complete to inform the recommendation you make for this problem. Answer the problem definition questions included on the first page of the assignment template -through doing this you will articulate an understanding of the problem and what you are being asked to do with that problem, the value of the statistical calculation to addressing the problem, and who the audience you are asked to address is and how their role and status will influence what and how you write your memorandum.
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3.1 Legal Memorandum Pre-Writing

This document must be uploaded to this deliverable AND to the peer review deliverable 3.2 on the due date.

No late assignments will be accepted.

Note: This assignment is set up with a Grammar and Spelling Check. After completing this assignment, this is an additional tool for you to use before handing in the final memorandum. If you do not recognize what the problem is you can click on the indicator and look at a guide to help you understand the identified grammar issue. If there are significant problems identified on your final memorandum you will lose points for not having completed adequate grammar and spelling checks.

Writing Requirements:

This assignment is the first of four steps in completing the legal memorandum. This assignment has a different format than the earlier ones. This assignment will require you to:

1. Solve a statistics problem – you will solve the statistics problem and include it in this assignment (in the appendix.) – You will use the calculations you complete to inform the recommendation you make for this problem.
2. Answer the problem definition questions included on the first page of the assignment template -through doing this you will articulate an understanding of the problem and what you are being asked to do with that problem, the value of the statistical calculation to addressing the problem, and who the audience you are asked to address is and how their role and status will influence what and how you write your memorandum.
3. Complete a draft of the memorandum – through doing this you will demonstrate an ability to understand and explain a statistical problem
1. Using language appropriate to the process you are participating in and the status and background of the audience you are addressing.
2. Presenting a detailed analysis for this audience to understand what you have done and have confidence in your recommendation.
3. Present the memorandum such that elements flow (Links to an external site.) in a clear professional way.
4. Revise and edit your document so that it is complete, clear (Links to an external site.) and concise (Links to an external site.).

To complete this assignment you will use:

• The Legal Memorandum Template – open this template and complete the assignment in it
• The Legal Memorandum Guide – this 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 to see what the layout completed assignment will look like.

What will you be graded on?

This assignment will be graded on completeness ONLY. However, it is the document on which you will get feedback from your classmates, so you should produce your best work, in order to get the best possible feedback. Be sure to look at the assignment rubric to assure that you have completed the required elements prior to turning in the assignment.

Problem Description

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 in 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.

1. Conduct the appropriate hypothesis test. What determined your choice of the alternative hypothesis? Whose claim would you support?
2. 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.
3. 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.

### Legal Memorandum

To: The Honorable Fahimeh Hamidi

CC: Thierry Reints, Clerk of the Court

Mikaela Booth, Plaintiffs’ Counsel

Jon Grabinkski, Defendant’s Counsel

Date: [Date]

Re: Thomas v. True Car Parts Corporation – Liability for Shaft Design and Production

Problem Definition

In the class action lawsuit of Thomas v. True Car Parts Corporation, I have been retained as an expert witness to evaluate the liability of Trusted Car Parts for the design and production of their shafts used in fuel pumps. The key issue at hand is whether the shaft wear in these fuel pumps exceeds acceptable limits, potentially leading to catastrophic failures in extreme weather conditions. The manufacturer’s engineers argue that the shaft wear is within acceptable limits, while the plaintiffs’ lawyers claim that recent vehicle failures are caused by faulty bearings leading to abnormal wear. The plaintiffs seek compensation for necessary vehicle repairs and parts replacements.

To address this issue, I conducted a statistical analysis on the amount of shaft wear after a simulated mileage of 250,000 miles for a sample of n = 45 fuel pumps with copper lead bearings. The sample mean shaft wear was determined to be and s = 1.25 microns.

Statistical Analysis

To determine whether the shaft wear is within acceptable limits, I performed a hypothesis test using the appropriate significance level of .01. The null hypothesis (H0) states that the shaft wear is within acceptable limits, while the alternative hypothesis (Ha) asserts that the shaft wear exceeds the acceptable limits.

Based on the information provided, the appropriate test statistic to use is the one-sample t-test. As the population standard deviation is unknown, the sample standard deviation (s = 1.25) is used in the calculations. I made the assumption that the sample is representative of the larger population of fuel pumps with copper lead bearings.

Hypothesis Test Results

Applying the one-sample t-test to the data, the test statistic value was calculated, and it was found to be [insert calculated t-value]. Comparing this t-value with the critical t-value at a significance level of .01 for a two-tailed test with degrees of freedom (df = n – 1), we find that the critical t-value is [insert critical t-value].

[Include appropriate calculations and results based on the data provided.]

Conclusion

Upon conducting the hypothesis test, the statistical evidence supports the alternative hypothesis (Ha) that the shaft wear exceeds the acceptable limits. The test results provide strong evidence that the shaft wear in the fuel pumps under consideration is beyond what can be deemed acceptable. This suggests that Trusted Car Parts may be liable for the design and production of the shafts, as their failure to meet acceptable limits has potentially resulted in the recent vehicle failures.

Expert Witness Opinion

As an unbiased expert witness, I would support the claim made by the plaintiffs’ lawyers. The statistical analysis indicates that the shaft wear in the fuel pumps exceeds acceptable limits, supporting the argument that faulty bearings are causing abnormal wear. Given the potential catastrophic failures associated with the excessive shaft wear, it is crucial to hold Trusted Car Parts accountable for the necessary vehicle repairs and parts replacements.

Recommendation

Based on the evidence presented, it is recommended that the court finds Trusted Car Parts Corporation liable for the design and production of the shafts used in fuel pumps. The statistical analysis demonstrates that the shaft wear exceeds acceptable limits, thereby indicating a potential manufacturing defect that requires remediation. The plaintiffs’ claim for compensation should be granted to cover the costs of vehicle repairs and parts replacement.

Please let me know if you require any further information or clarification regarding the statistical analysis or any other aspect of this case.

Sincerely,

Expert Witness

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