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Question description

In this case, 40 individuals visited the hospital looking for information and education regarding their diabetes.

Since diabetes relates to the body’s ability to use glucose, their glucose level was measured. These patience

took a knowledge test about diabetes before and after being given some educational materials. Satisfaction

with their overall visit was also measured through a survey. The data appear below for your reference. The

Excel spreadsheet with these data can be found in Doc Sharing and should be opened in Minitab to complete

the analyses required in each part of this project.

Hosp_Stay Hosp_Satisfaction Diab_Pretest Diab_Posttest Glucose

2 VeryDissat 34 39 122

3 SWDissat 33 30 116

1 SWSat 29 22 108

1 SWSat 17 14 63

7 SWDissat 69 60 74

7 VerySat 69 70 84

8 SWDissat 81 82 67

8 VerySat 81 88 57

9 SWSat 52 100 231

4 SWDissat 45 48 93

1 SWSat 38 28 76

1 VerySat 27 33 163

6 VeryDissat 45 54 217

8 SWDissat 58 71 112

7 SWDissat 68 84 107

6 SWDissat 48 49 95

1 VerySat 9 15 104

8 VerySat 50 51 63

6 SWDissat 65 51 189

Introduction Back to Top

MATH399 Course Home Course Project (NOV14)

1 of 6 9/24/2014 6:08 AM

6 SWDissat 64 78 53

1 VerySat 25 30 96

5 VerySat 50 45 102

2 VeryDissat 47 41 142

2 VeryDissat 24 18 133

3 VerySat 35 30 88

1 SWDissat 29 31 87

4 SWDissat 39 33 161

4 SWDissat 53 42 104

5 VeryDissat 57 49 92

4 SWSat 50 50 168

8 VeryDissat 64 100 72

6 VeryDissat 90 95 100

8 SWDissat 52 63 63

9 SWSat 52 64 132

9 VerySat 67 77 171

8 SWSat 68 68 163

5 SWSat 67 60 84

7 SWSat 44 53 102

7 VeryDissat 57 51 130

3 SWSat 58 50 71

The variables are

1. Hospital stay – number of days in hospital

Hospital satisfaction – level of satisfaction with hospital services during stay (very highly satisfied, highly

satisfied, somewhat dissatisfied, and very dissatisfied)


3. Diabetes Pretest – score on diabetes knowledge test (must score 95 or higher to leave)

Diabetes Posttest – score on diabetes knowledge test after receiving educational material created for

this study


5. Glucose – blood glucose in mg/dL.

The data are available in Doc Sharing Course Project Data Set as an Excel file. You are to copy and paste

the data set into a Minitab Worksheet.

Open the file MATH533_Course_Project_Data_HOSPITAL.xlsx from Doc Sharing.

Summarize the data for each of the five variables. For each variable, find the mean, median, variance,

and standard deviation. Use Minitab as appropriate, and explain what the results mean. These

calculations may not be possible for each variable. If you cannot calculate any or all of these for a

specific variable, please note that and state why.

PROJECT PART A: Exploratory Data Analysis Back to Top

MATH399 Course Home Course Project (NOV14)

2 of 6 9/24/2014 6:08 AM

Analyze the connections or relationships between two variables. There are ten pairings possible here

(Hospital stay and hospital satisfaction, hospital stay and diabetes pretest, hospital stay and diabetes

posttest, hospital stay and glucose, hospital satisfaction and diabetes pretest, hospital satisfaction and

diabetes posttest, hospital satisfaction and glucose, diabetes pretest and diabetes posttest, diabetes

pretest and glucose, and diabetes posttest and glucose ). Choose two of these pairings and find the

correlation coefficient and show the scatter plot. Explain what you see. Some variables show clear

relationships, while others do not.

Prepare your report in Microsoft Word (or some other word processing package), integrating your

graphs and tables with text explanations and interpretations. Be sure that you have graphical and

numerical back up for your explanations and interpretations. Be selective in what you include in the

report. You should not generate a 20 page report on every variable and every possible relationship.

Rather what you should do is to highlight what you see for the individual and two or three sentences of

interpretation. For the two pairings you selected, identify and report your results using graphical and

numerical summary (as appropriate), with interpretations.

All DeVry University policies are in effect, including the plagiarism policy.

Project Part A report is due by the end of Week 2.

Project Part A is worth 100 total points. See grading rubric below.

Submission: The report from part 4 including all relevant graphs and numerical analysis along with


Format for report:

A. Brief Introduction

B. Discuss your 1st individual variable

C. Discuss your 2nd individual variable

D. Discuss your 3rd individual variable

E. Discuss your 4th individual variable

F. Discuss your 5th individual variable

G. Discuss your 1st pairing of variables

H. Discuss your 2nd pairing of variables

I. Conclusion

Category Points % Description

Five Individual Variables

- 12pts. each

60 60

graphical analysis, numerical analysis (when

appropriate) and interpretation

Two Relationships - 15

pts. each

30 30

graphical analysis, numerical analysis (when

appropriate) and interpretation

Communication Skills 10 10

writing, grammar, clarity, logic, cohesiveness,

adherence to the above format

Project Part A: Grading Rubric Back to Top

MATH399 Course Home Course Project (NOV14)

3 of 6 9/24/2014 6:08 AM

Category Points % Description

Total 100 100

A quality paper will meet or exceed all of the

above requirements.

Your manager has speculated the following:

a. the average (mean) level of glucose is less than 130

b. the true population proportion of number somewhat satisfied with their hospital stay is greater than 28%,

c. the average (mean) score on the diabetes pretest is greater than 52.

the average (mean) score on the diabetes posttest ONLY among those that are "somewhat satisfied" is

less than 75.

Using the sample data, perform the hypothesis test for each of the above situations in order to

see if there is evidence to support your manager’s belief in each case a.-d. In each case use the

Seven Elements of a Test of Hypothesis, in Section 6.2 of your textbook with α = .05, and explain

your conclusion in simple terms. Also be sure to compute the p-value and interpret.


Follow this up with computing 95% confidence intervals for Glucose and Diabetes Posttest, and

again interpreting these intervals.


Write a report to your manager about the results, distilling down the results in a way that would be

understandable to someone who does not know statistics. Clear explanations and interpretations

are critical.



All DeVry University policies are in effect, including the plagiarism policy.

Project Part B report is due by the end of Week 6.

Project Part B is worth 100 total points. See grading rubric below.

Submission: The report from part 3 + all of the relevant work done in the hypothesis testing (including

Minitab) in 1, and the confidence intervals (Minitab) in 2 as an appendix.

Format for report:

A. Summary Report (about 1 paragraph on each of the speculations a.-d.)

Appendix with all of the steps in hypothesis testing (the format of the Seven Elements of a Test of

Hypothesis, in Section 6.2 of your textbook) for each speculation a.-d. as well as the confidence

intervals, and including all Minitab output

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