Hypothesis testing | Probability

Critical Thinking Assignment (90 Points)

Important! Read First

Don't use plagiarized sources. Get Your Custom Essay on
Hypothesis testing | Probability
Just from $13/Page
Order Essay

Choose one of the following two assignments to complete this week. Do not complete both assignments. Identify your assignment choice in the title of your submission. Note that, while there are two options for the Critical Thinking Assignment, there is only one rubric. Review the rubric to confirm you are meeting the assignment requirements.

Option #1: Critical Thinking: Quality at A1 Hotels

A1 Hotels operates luxury hotels throughout the world. Recently, motivated by some incidents that appeared in the news, they have been concerned about the quality of service. The company has been giving the following survey to its clients after their stay:

  1. How would you rate the quality of your room? Select one.

    Good(G), Poor(P)

  2. How would you rate the quality of your food? Select one.

    Good(G), Poor(P)

  3. How would you rate the quality of your service? Select one.

    Good (G), Poor(P)

Any customer who answered “Poor” to at least one of the three questions up above is considered to be “dissatisfied.” Traditionally, 40% of customers have been dissatisfied.

A1 Hotels would like to see if the recent level of customer satisfaction has changed. Therefore, 200 survey responses were recently chosen at random for analysis. The complete data set is in the file named Hotels.

Managerial Report

Prepare a report (see below) for A1 Hotels that summarizes your assessment of customer satisfaction. Be sure to include the following seven items in your report.

  1. To summarize the data, compute the proportion of all clients that
    1. Answered “Poor” to room quality.
    2. Answered “Poor” to food quality.
    3. Answered “Poor” to service quality.
  2. Develop the 92% confidence interval for the proportion of all recent clients that were “dissatisfied.”
  3. Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to room quality.
  4. Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to food quality.
  5. Develop the 92% confidence interval for the proportion of all recent clients who answered “Poor” to service quality.
  6. Conduct a hypothesis test (using either the p-Value Approach or the Critical Value Approach) to determine if the proportion of all recent clients is more dissatisfied than the traditional level of dissatisfaction.  Use α = 0.08. Do not forget to include the correctly worded hypotheses and show all the steps required to conduct the hypothesis test.
  7. What advice would you give to A1 Hotels based upon your analysis of the data? What is the magnitude of the issue? How can this study be improved?

Write a report that adheres to the Written Assignment Requirements under the heading “Expectations for CSU-Global Written Assignments” found in the CSU-Global Guide to Writing and APA Requirements.  As with all written assignments at CSU-Global, you should have in-text citations and a reference page. An example paper is provided in the MTH410 Guide to Writing with Statistics. (link provided at the bottom of the page)

Submit your Excel file in addition to your report.

Requirements:

  1. Paper must be written in third person.
  2. Your paper should be four to five pages in length (counting the title page and references page) and cite and integrate at least one credible outside source. The CSU-Global Library is a great place to find resources.
  3. Include a title page, introduction, body, conclusion, and a reference page.
  4. The introduction should describe or summarize the topic or problem. It might discuss the importance of the topic or how it affects you or society as a whole, or it might discuss or describe the unique terminology associated with the topic.
  5. The body of your paper should answer the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
  6. The conclusion should summarize your thoughts about what you have determined from the data and your analysis, often with a broader personal or societal perspective in mind. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.
  7. Include any tables of data or calculations, calculated values, and/or graphs associated with this problem in the body of your assignment.
  8. Document formatting, citations, and style should conform to the CSU-Global Virtual Library CSU-Global Guide to Writing and APA: Introduction. A short summary containing much that you need to know about paper formatting, citations, and references is contained in the New Sample APA Paper. In addition, information in the CSU-Global Virtual Library under the Writing Center/APA Resources tab has many helpful areas (Writing Center, Writing Tips, Template & Examples/Papers & Essays, and others).

Option #2: Quality of Cerámica América Sinks

Cerámica América makes both commercial and home sinks, toilets, and tile throughout Latin America. There have been many complaints that its commercial sinks are of poor quality. Recently, a new type of home sink, Modelo Americano, has been developed. The company hopes that this new model is of better quality. Quality Control tests sinks using the following three tests:

  1. Cracked or Chipped Ceramic:

    Pass (P) or Fail (F)

  2. Glaze Quality:

    Pass (P) or Fail (F)

  3. Stress Test

    Pass (P) or Fail (F)

A sink gets a “Passing” grade if it passes all three of the above Traditionally, 85% of its commercial sinks have gotten a “Passing” grade. Cerámica América would like to see if its passing rate is better than the traditional rate. Recently, 200 Modelo Americano sinks were randomly chosen from its manufacturing plants. The complete data set is in the file named Sinks.

Managerial Report

Prepare a report (see below) for Cerámica América that summarizes your assessment of its Modelo Americano sinks. Be sure to include the following seven items in your report.

  1. To summarize the data, compute the proportion of all sinks that
    1. “Passed” the Cracked or Chipped test.
    2. “Passed” the Glaze Quality test.
    3. “Passed” the Stress Test.
  2. Develop the 98% confidence interval for the proportion of all Modelo Americano sinks that got a “Passing” grade.
  3. Develop the 98% confidence interval for the proportion of all Modelo Americano sinks that passed the Cracked or Chipped test.
  4. Develop the 98% confidence interval for the proportion of all Modelo Americano sinks that passed the Glaze Quality test.
  5. Develop the 98% confidence interval for the proportion of all Modelo Americano sinks that passed the Stress Test.
  6. Conduct a hypothesis test (using either the p-Value Approach or the Critical Value Approach) to determine if the proportion of all Modelo Americano sinks that get a “Passing” grade is larger than the than the traditional “Passing” rate.  Use α = 0.02. Do not forget to include the correctly worded hypotheses and show all the steps required to conduct the hypothesis test.
  7. What advice would you give to Cerámica América based upon your analysis of the data? What is the magnitude of the improvement (if any)? How can this study be improved?

Write a report that adheres to the Written Assignment Requirements under the heading “Expectations for CSU-Global Written Assignments” found in the CSU-Global Guide to Writing and APA Requirements.  As with all written assignments at CSU-Global, you should have in-text citations and a reference page. An example paper is provided in the MTH410 Guide to Writing with Statistics. (link provided at the bottom of the page)

Submit your Excel file in addition to your report.

Requirements:

  1. Paper must be written in third person.
  2. Your paper should be four to five pages in length (counting the title page and references page) and cite and integrate at least one credible outside source. The CSU-Global Library is a great place to find resources.
  3. Include a title page, introduction, body, conclusion, and a reference page.
  4. The introduction should describe or summarize the topic or problem. It might discuss the importance of the topic or how it affects you or society as a whole, or it might discuss or describe the unique terminology associated with the topic.
  5. The body of your paper should answer the questions posed in the problem. Explain how you approached and answered the question or solved the problem, and, for each question, show all steps involved. Be sure this is in paragraph format, not numbered answers like a homework assignment.
  6. The conclusion should summarize your thoughts about what you have determined from the data and your analysis, often with a broader personal or societal perspective in mind. Nothing new should be introduced in the conclusion that was not previously discussed in the body paragraphs.
  7. Include any tables of data or calculations, calculated values, and/or graphs associated with this problem in the body of your assignment.
  8. Document formatting, citations, and style should conform to the CSU-Global Virtual Library CSU-Global Guide to Writing and APA: Introduction. A short summary containing much that you need to know about paper formatting, citations, and references is contained in the New Sample APA Paper. In addition, information in the CSU-Global Virtual Library under the Writing Center/APA Resources tab has many helpful areas (Writing Center, Writing Tips, Template & Examples/Papers & Essays, and others).

***Only need one of these assignments***

Options HotelsOptions 2 SinksGuide to Writing with Statistics

The Quizlet
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Us

Exemplary Academic Writing Service

At TheQuizlet.com, you are guaranteed of quality service from our professional writers. We maintain consistent communication with customers after placing an order to avoid missing anything that may compromise the quality of delivered work.

Top Writers

Our hiring process is rigorous to maintain the desired quality that has become the core of our business. We expose potential writers to an uncompromising selection process that enables TheQuizlet to pick the best out of the rest. TheQuizlet boasts of a competent team of writers, editors, and professors who work towards accomplishing your goals.

Plagiarism-Free Papers

TheQuizlet has an in-house plagiarism software that lowers the probability of delivering plagiarized papers to our clients. Referencing is guided by the format specified by a customer when placing an order. Our writers are conversant with all referencing formats that include APA, MLA, Chicago, Harvard, and Vancouver among others.

24/7 Customer Support

We understand the importance of effective communication and as such, TheQuizlet has a dedicated customer support department that responds to all client needs. You can easily contact our team through a chat window at the bottom left corner. Additionally, clients can reach us through support’s email or a telephone number available on our contact page. Feel free to contact us at any time and our team of experts will solve all your problems.

Swift Delivery and 100% Money-back Guarantee

When placing an order, ensure that you specify the correct deadline to help our writers work around the provided timeline. At TheQuizlet, we deliver our tasks before the projected deadline to give time for the customer to proofread the work before submission. In the event we cannot deliver a paper on time, we initiate contact with the client to renegotiate a new deadline.

Unlimited and Free Revisions

We urge all our customers to request for a revision whenever they identify a need to amend the paper. Since we understand your concerns, TheQuizlet.com does not charge for revisions. Nonetheless, we encourage customers to be genuine when requesting for revisions.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

TheQuizlet is a one-stop shop for all your writing needs. We tackle each customer’s needs differently to improve the quality of outcomes and meet your expectations.

Essays

Academic Help Service

TheQuizlet is committed to delivering quality work on time to ensure our clients get the value for their money.

Admissions

Admission Essays and Professional Writing

Admission essays are personal, as opposed to other papers. For this reason, our team will request for any information that will enable them to deliver quality work, which allows you to convince the admissions board on why you should be granted the application.

Reviews

Editing and Proofreading

Our team comprises of qualified researchers, writers, and editors who go through the different papers before delivering them to our clients. Whether your paper is being written from scratch or you want it to be edited, you can trust TheQuizlet for all your needs.

Reviews

Revision Support

After receiving the final draft, you can request for a revision to incorporate various changes that are aligned with your expectations. All our papers are written in line with the latest writing standards.