CH. 9, 3 questions only.

Answer using excel spreadsheet. Must show all formulas9.15 Suppose that in Problem 9.14, the standard deviation is 1,200 hours.a. Repeat (a) through (d) of Problem 9.14, assuming a standard deviation of 1,200 hours.b. Compare the results of (a) to those of Problem 9.14.9.14 question and Answer:(9.14 The quality-control manager at a compact flu-orescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,500 hours. The population standard deviation is 1,000 hours. A random sample of 64 CFLs indicates a sample mean life of 7,250 hours.a. At the 0.05 level of significance, is there evidence that the mean life is different from 7,500 hours?b. Compute the p-value and interpret its meaning.c. Construct a 95% confidence interval estimate of the population mean life of the CFLs.d. Compare the results of (a) and (c). What conclusions do you reach?9.14 Answer:(a) ZSTAT=7,250-7,5001,000264=-2.0. Because ZSTAT=-2.006 -1.96, reject H0.(b) [email protected]=0.0456.(c) 7,005…m…7,495.(d) The conclusions are the same.)9.49 You are the manager of a restaurant that delivers pizza to college dormitory rooms. You have just changed your deliveryprocess in an effort to reduce the mean time between the order and completion of delivery from the current 25 minutes. A sample of 36 orders using the new delivery process yields a sample mean of 22.4 minutes and a sample standard deviation of 6 minutes.a. Using the six-step critical value approach, at the 0.05 level of significance, is there evidence that the population mean deliv-ery time has been reduced below the previous population mean value of 25 minutes?b. At the 0.05 level of significance, use the five-step p-value ap-proach.c. Interpret the meaning of the p-value in (b).d. Compare your conclusions in (a) and (b).9.55 According to a recent National Association of Colleges and Employers (NACE) report, 48% of college student internships are unpaid. (Source: “Just 38 Percent of Unpaid Internships Were Subject to FLSA Guidelines,” bit.ly/Rx76M8.) A recent survey of 60 college interns at a local university found that 30 had unpaid internships.a. Use the five-step p-value approach to hypothesis testing and a 0.05 level of significance to determine whether the propor-tion of college interns that had unpaid internships is different from 0.48.b. Assume that the study found that 37 of the 60 college interns had unpaid internships and repeat (a). Are the conclusions the same?

 
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MAT 510 Week 2

Select one project from the working or educational environment of your choice and specify the variation nature of the project in question. Next, propose the overall manner in which you would apply statistical thinking strategy to improve the end result of the selected project. Provide a rationale to support your response.

 
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Writing Assignment 2 (418) round 2

AssignmentPart 1: Write a complete proof for Croom Ch 4.4 #9(b).Part 2: Next, write a complete proof for Croom Ch 4.4 #10.Use a solid organizational structure:- State the hypotheses- State the conclusions- Clearly and precisely prove the conclusions from the hypotheses- Results presented earlier in the text may be used and must be clearly documentedA few notes about format: use Microsoft Word; use Equation Editor for all mathematical symbols, e.g. x ∈ X or Cl(A) ⋂ Cl(X-A); and use the fonts Cambria and Cambria Math in size 11 so your typed work is the same font as your equations.

 
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Finite Math Problems

I have 25 questions that need to be answered. Work and answers need to be shown on answer sheet.

 
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OPP

Subject: Operational ExcellenceBooks:  Langer, A. M. (2017). Information Technology and organizational learning: Managing behavioral change in the Digital age. CRC Press.This week select an organization that has a Global platform (they operate in more than one country), that has demonstrated operational excellence.  In this paper, perform the following activities:Name the organization and briefly describe what good or service they sell and where they operate.Note how they are a differentiator in the market.Note the resources used to ensure success in their industry (remember resources are comprised of more than just people).Explain what actions the company took to achieve operational excellence.Need minimum four pages, excluding title and reference pages with quality in writing.You should not provide an overview of the course.Reflect how the knowledge and skills obtained through meeting course objectives were applied or could be applied in the workplace.

 
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Literature review 10 pages – 2500 words APA

conduct a literature review (scholarly sources only) on Information Governance. You will determine how researchers have attempted to examine that issue by collecting data (you are not collecting data; just reporting on prior research).As you read the literature, it will become apparent that there are multiple issues. Select one issue that stands out in the literature and address it. You must end up with at least five scholarly sources on which you will base your paper.

 
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Simplification

Answer the attached question.

 
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Hist of Math Writing assignment

Respond to *one* of the following topics. In all cases, your responses should be clearly organized and should make specific reference (with citation) to the primary texts. You should address along the way each of the questions contained in your chosen topic, but your essay should not just be a bullet-point response, but rather a reflection on the topic that synthesizes your thoughts on the various individual questions. You may want to (and in some cases will have to) read beyond our assigned passages. Do not hesitate to take a stance, nor to raise a question that you find puzzling and might want to think about more. 600 words is an appropriate length. (1) Familiarize yourself with some of the basic methods of the counting-board (you might wish to play with toothpicks or some such), and then study the counting board implementation of the root extraction methods in The Nine Chapters. (You will have to look up the Shen-Crossley-Lun book in the library: please just scan or photocopy pages you wish to read, so that the book remains available for other students.) Come up with your own examples of quadratic equations, and explain their solutions on the counting-board—your explanation should include diagrams representing the procedure, which you may draw by hand. Also give in parallel a symbolic “algebraic” explanation of the procedure. Compare these two approaches at a practical and/or conceptual level. (2) In Quadrature of Parabolas, Archimedes begins with yet another proof (that we did not discuss), of the quadrature of parabolas, culminating in Proposition 17 of the book. Like the argument in The Method, this proof uses physical principles like the law of the lever. Study this argument, and compare and contrast it with the argument in The Method. Discuss carefully how each argument works with—or works around—concepts of the infinite that arise when studying non-rectilinear areas. (3) Read through the definitions and postulates in Sphere and Cylinder I. Carefully go over all of the ingredients in Archimedes’ proof of the calculation of the surface area of a sphere, and illustrate the use of the various postulates. Some of these postulates are particularly interesting, because they are from a modern perspective interesting mathematical results capable of proof via analytic methods. Read the section of the commentary of Eutocius (also translated in Netz’s edition of Sphere and Cylinder I, to which we have unlimited ebook access via the university library) on Archimedes’ definition and postulates in Sphere and Cylinder I: how does Eutocius understand the role of the postulates? In your view, how does Archimedes understand the role of the postulates? (4) Come up with your own topic. Whatever it is, you should state it clearly, and your essay should involve detailed reading of at least one primary text.

 
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Week 5

Week 5 Assignment – Case Study: Statistical ForecastingDr. Megan Zobb, a key researcher within the North Luna University Medical Center, has been studying a new variant of a skin disease virus that seems to be surfacing among the North Luna University population. This variant (which has been tentatively named Painful Rash or PR), leads to the formation of surface lesions on an individual’s body. These lesions are very similar to small boils or isolated shingles sores. These PR lesions are not necessarily clustered as shingles lesions are, but are isolated across the body.Insights From Initial InterviewsMegan is initiating some efforts at a preliminary analysis. She has seen 20 initial patients and made several observations about the skin disease. She wants to analyze this initial data before structuring and recommending a more encompassing study.The signs and symptoms of this disorder usually affect multiple sections of the patient’s body. These signs and symptoms may include:Pain, burning, numbness or tingling, but pain is always present.Sensitivity to touch.A red rash that begins a few days after the pain.Fluid-filled blisters that break open and crust over.Itching.Some people also experience:Fever.Headache.Sensitivity to light.Fatigue.Pain is always the first symptom of PR. For some, it can be intense. Depending on the location of the pain, it can sometimes be mistaken for a symptom of problems affecting the heart, lungs, or kidneys. Some people experience PR pain without ever developing the rash. The degree of pain that the individual experiences is seemingly proportional to the number of lesions.Dr. Zobb is extremely concerned that this new variant is especially challenging to the younger population, who are active and like to be outdoors. She has asked you as an analyst and statistician for some assistance in analyzing her initial data. She is not a biostatistician, so she requests that you explain the process you use and your interpretation of the results for each task.Initial Data AnalysisDr. Zobb has accumulated some data on an initial set of 20 patients across multiple age groups. She believes that the data suggests younger individuals are affected more than others. She wants you to complete the tasks shown here based on the data below.For each of the following, provide a detailed explanation of the process you used along with your interpretation of the results. Submit the response in a Word document and attach your Excel spreadsheet to show your calculations (where applicable). Be sure to number each response (e.g., 1.a, 1.b,…).Develop an equation to model the data using a regression analysis approach and explain your calculation process in Excel.Calculate the r-square statistic using Excel.  Interpret the meaning of the r-square statistic in this case.Determine three conclusions that address the initial observations and are supported by the regression analysis.Regression Analysis Initial DataPatient NumberAge of PatientNumber of Lesions124162637345124172452120672473213836169262110471011311512231813518142422152618162519173112181929191825202117Effects of Sunlight AnalysisIn her initial observations, Dr. Zobb notices that the number of lesions that appear on a patient seems to be dependent on the amount of direct sunlight exposure that the patient receives. She is uncertain at this point why this would be the case, but she is a good experimentalist and is trying to establish some observations that have statistical validity. She has taken a limited amount of data on 8 patients and wants you to complete the appropriate analysis based on the data below (be sure to show your work):Develop an equation to model the data using a regression analysis approach and explain your calculation process, using Excel.Megan has a small group of three additional patients that are the same age that she wants to examine for lesions.  She knows the number of hours of continuous exposure to direct sunlight that each has experienced. Predict the number of lesions that each of these patients will have based on the regression analysis that you completed in your initial data analysis:Patient 9 – 193 hours.Patient 10 – 219 hours.Patient 11 – 84 hours.Determine three conclusions based on the correlation of the number of lesions to hours of sunlight exposure, using regression analysis.Sunlight Exposure Regression DataPatient NumberTime of Continuous Exposure to Direct Sunlight(Minutes)Number of Lesions122524218416322020424026518014618416718620821522Over the Counter Medication Effectiveness AnalysisDr. Zobb wants to test several over the counter lotions—that is, lotions available without a prescription—that can be applied directly to the lesions. She wants to determine whether there is a difference in the mean length of time it takes these three types of pain lotions to provide relief from the pain caused by these lesions. Megan is hoping that one of these lotions might be more promising than the others. Several sufferers (with roughly the same number of lesions) are randomly selected and given one of the three medications. Each sufferer records the time (in minutes) it takes the medication to begin working. The results are shown in the table below. She asks you to answer these questions (be sure to show your work).State the null hypothesis and the alternative hypothesis for this situation.At α = 0.01, can you conclude that the mean times are different? Assume that each population of relief times is normally distributed and that the population variances are equal.  Hint: Use a one-way ANOVA to solve this problem. Be certain to show your calculations and describe the process you used to solve this problem.Determine three conclusions on the effectiveness of the medication by addressing observations or hypotheses regarding these initial tests.Effectiveness of Over the Counter MedicationsMedication 1 (Minutes)Medication 2 (Minutes)Medication 3 (Minutes)121614151417172120121515 19Summary of Data AnalysisNow that you have all of your data analysis:Provide a three-paragraph summary of the findings you learned through the analysis.Provide three data-driven suggestions for further exploration.This course requires the use of Strayer Writing Standards. For assistance and information, please refer to the Strayer Writing Standards link in the left-hand menu of your course. Check with your professor for any additional instructions.  The specific course learning outcome associated with this assignment is:Recommend a course of action utilizing quantitative methods for health services including biostatistics, forecasting, and the modeling of predictive functions.

 
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Microsoft office

Any experience with office?

 
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