Help please

User Generated

zvfflznr247

Mathematics

Inferential Statistics and Analytics

Rasmussen University

Description

Step One -

Student Profile

You are a statistician working for a drug company. A few new scientists have been hired by your company. They are experts in pharmacology, but are not experts in doing statistical studies, so you will explain to them how statistical studies are done when testing two samples for the effectiveness of a new drug. The two samples can be dependent or independent, and you will explain the difference.


Concept being Studied

Your focus is on hypothesis tests and confidence intervals for two populations using two samples, some of which are independent and some of which are dependent. These concepts are an extension of hypothesis testing and confidence intervals which use statistics from one sample to make conclusions about population parameters.

What to Submit

Your research and analysis should be presented on the Word document provided. All calculations should be provided on a separate Excel workbook that should be submitted to your boss as well.

Step Two -

Instructions

You are currently working at NCLEX Memorial Hospital in the Infectious Diseases Unit. Over the past few days, you have noticed an increase in patients admitted with a particular infectious disease. You believe that the ages of these patients play a critical role in the method used to treat the patients. You decide to speak to your manager, and together you work to use statistical analysis to look more closely at the ages of these patients.

You do some research and put together a spreadsheet of the data that contains the following information:

  • Client number
  • Infection disease status
  • Age of the patient

You are to put together a PowerPoint presentation that explains the analysis of your findings which you will submit to your manager. The presentation should contain all components of your findings. For review, the components of the report should include:

  1. Brief overview of the scenario and variables in the data set
  2. Discussion, calculation, and interpretation of the mean, median, mode, range, standard deviation, and variance
  3. Discussion, construction, and interpretation of the 95% confidence interval
  4. Explanation of the full hypothesis test
  5. Conclusion

The calculations should be performed in your spreadsheet that you will also submit to your manager. You can find additional information on what to add to your PowerPoint presentation in this Word document. Use the questions in the worksheet as your guide for the contents of your presentation.

For your final deliverable, submit your PowerPoint presentation and the Excel workbook showing your work. Do NOT submit your Word document.

Unformatted Attachment Preview

Deliverable 05 – Worksheet Instructions: The following worksheet describes two examples – one is an example for independent samples and the other one for dependent samples. Your job is to demonstrate the solution to each scenario by showing how to work through each example in detail. You are expected to explain all of the steps in your own words. Independent samples: One of our researchers wishes to determine whether people with high blood pressure can reduce their systolic blood pressure by taking a new drug we have developed. The sample data is shown below, where 𝑥̅1 represents the mean blood pressure of the treatment group and 𝑥̅2 represents the mean for the control group. Use a significance level of 0.01 and the critical value method to test the claim that the drug reduces the blood pressure. We do not know the values of the population standard deviations. TREATMENT CONTROL GROUP GROUP n1 75 n2 70 ̅𝟏 ̅ 𝒙 186.7 𝒙𝟐 201.9 s1 37.5 s2 39.8 1. Write the hypotheses in symbolic form, determine if the test is right-tailed, lefttailed, or two tailed and explain why. Answer and Explanation Enter your step-by-step description and explanations here. 2. Calculate the critical value and the test statistic. Answer and Explanation Enter your step-by-step description and explanations here. 3. Make a decision about the null hypothesis and explain your reasoning, then make a conclusion about the claim in nontechnical terms. Answer and Explanation Enter your step-by-step description and explanations here. Dependent samples This same new drug was tested on another group, but this time the test was done before the drug was administered, and then tested after the drug was given to the same group. The results are shown in the table below: Subject 1 2 3 4 5 6 7 8 9 10 11 12 Before 199 174 195 170 179 182 183 208 185 155 169 208 After 190 172 187 167 169 181 176 193 179 145 166 197 Use the data above with a significance level of 0.05 to test the claim that for the populations of blood pressures before and after the drug, the differences have a mean greater than 0 mm Hg (so the claim is that the drug helps lower the blood pressure). Use the P-Value method to determine whether or not to reject the null hypothesis and state your conclusion. 4. Write the hypotheses in symbolic form, determine if the test is right-tailed, left- tailed, or two tailed and explain why. Answer and Explanation Enter your step-by-step description and explanations here. 5. Calculate the test statistic and the P-Value. Answer and Explanation Enter your step-by-step description and explanations here. 6. Make a decision about the null hypothesis and explain your reasoning, then make a conclusion about the claim in nontechnical terms. Answer and Explanation Enter your step-by-step description and explanations here. Deliverable 07 Worksheet Scenario You are currently working at NCLEX Memorial Hospital in the Infectious Diseases Unit. Over the past few days, you have noticed an increase in patients admitted with a particular infectious disease. You believe that the ages of these patients play a critical role in the method used to treat the patients. You decide to speak to your manager, and together you work to use statistical analysis to look more closely at the ages of these patients. You do some research and put together a spreadsheet of the data that contains the following information: ● Client number ● Infection disease status ● Age of the patient You need the preliminary findings immediately so that you can start treating these patients. So, let’s get to work! Background information on the Data: The data set consists of 60 patients that have the infectious disease with ages ranging from 35 years of age to 76 years of age for NCLEX Memorial Hospital. Requirements: 1) Answer the questions below in a PowerPoint presentation. 2) Include only the summary calculations in your slides (not formulas). 3) Show calculations in your Excel spreadsheet (include formulas and do not round the numbers). Slide 1: Title Introduce your scenario and data set. ○ Slide 2: Provide a brief overview of the scenario you are given above and the data set that you will be analyzing. o Slide 3: Classify the variables in your data set. ▪ Which variables are quantitative/qualitative? ▪ Which variables are discrete/continuous? ▪ Describe the level of measurement for each variable included in the data set (nominal, ordinal, interval, ratio) ● Discuss the importance of the Measures of Center and the Measures of Variation. o Slide 4: What are the measures of center and why are they important? o Slide 5: What are the measures of variation and why are they important? ● Slide 6: Calculate the measures of center and measures of variation. Interpret your results in context of the scenario. o Mean ● ● Median Mode Midrange Range Variance Standard deviation Slide 7: Discuss the importance of constructing confidence intervals for the population mean by answering these questions: o What are confidence intervals? o What is a point estimate? o What is the best point estimate for the population mean? Explain. o Why do we need confidence intervals? Slide 8: Construct a 95% confidence interval for the population mean. Assume that your data is normally distributed and σ is unknown. Include a statement that correctly interprets the confidence interval in context of the scenario. Perform the following hypothesis test: o Original Claim: The average age of all patients admitted to the hospital with infectious diseases is less than 65 years of age. ▪ Test the claim using α = 0.05 and assume your data is normally distributed and σ is unknown. o Answer the following: 1. Slide 9: Write the null and alternative hypothesis symbolically and identify which hypothesis is the claim. 2. Slide 9: Is the test two-tailed, left-tailed, or right-tailed? Explain. 3. Slide 10: Which test statistic will you use for your hypothesis test; z-test or t-test? Explain. 4. Slide 10: What is the value of the test-statistic? What is the p-value? What is the critical value? 5. Slide 11: What is your decision; reject the null hypothesis, or do not reject the null hypothesis? a. Explain why you made your decision, including the results for your p-value and the critical value. 6. Slide 11: State the final conclusion in nontechnical terms. Slide 12: Conclude by recapping your ideas by summarizing the information presented in context of the scenario. o Include the mean, standard deviation, confidence interval with interpretation, and results of the hypothesis test. o What conclusions, if any, do you believe you can draw as a result of your study? o What did you learn from the project about the population based on this sample? What did you learn about the specific statistical tests you conducted? o o o o o o 4. 5. 6. 7. Patient # Infectious Disease Age 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 68 41 59 55 45 78 75 67 65 71 67 66 70 71 44 46 73 54 43 56 67 67 75 77 62 61 72 74 54 61 73 49 48 69 72 76 62 58 46 62 63 66 64 55 64 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 49 72 49 70 70 70 58 60 70 67 67 54 75 69 64
Purchase answer to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Hey, there is a separate word Worksheet attached. Was it meant for this assignment?

Statistic report
Name
Institution
Date

Scenario
• Dataset is obtained from the NCLEX Memorial Hospital in the Infectious
Diseases Unit

• The data is organized into 3 variables; client number, age, and infectious
disease status

• The researcher attempts to establish if age had an impact on the method
used to treat patients

• Sample size =60 observations

Data variables
• The variable Age of patients is a quantitative and continuous variable
assuming ratio sc...


Anonymous
Very useful material for studying!

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Related Tags