A group ofWeek 4 Project - STAT 3001 Student Name: Date: 8/2/17 Ashley Roane Instructions: To complete this project, you will need the following materials: STAT DISK User Manual (found in the classroom in Doc Sharing) Access to the internet to download the Stat Disk program. Part I. Analyze Data Instructions 1. Open the file Body Data using menu option Datasets and then Elementary Stats, 13th Edition. This file contains some information on the health measurements of men and women (men are 1 and women are 0 under the Gen column). How many observations are there in this file? Answers 300 2. What would you expect to find for blood pressure relative to the mean of LDL in the group? Part II. Descriptive Statistics 3-6 Generate descriptive Variable statistics for Sys, Dias, and LDL and complete the following table. Round mean Systolic BP and standard deviation to 2 Diastolic decimal places. BP LDL 7. Did you get the results you expected here? Explain why. 8. Which of the three readings experienced the MOST variation? How do you know? Sample Mean Sample Size 122.96 Sample Standard Deviation 15.85 70.75 11.62 300 113.71 35.19 300 300 I used stat disk explore data- descriptive statistics under the heading data. I used it to avoid calculation error and to save time LDL The highest value is 202 and the lowest value is 48 1 Part III. Confidence Intervals 9. Generate a 95% interval for the mean of the SYS (systolic) group. Paste your results here. 10. Generate a 95% interval for the mean of the DIAS (diastolic)group. Paste your results here. 11. Generate a 95% interval for the mean of the LDL group. Paste your results here 95% CI for the Mean: 121.159 < mean <124.761 95% CI for the Mean: 69.4335 < mean <72.0731 95% CI for the Mean: 109.7152 < mean <117.7114 12. Create a graph below by illustrating all three confidence intervals on one graph using the tools in your word processor (exampled below). Stat Disk cannot do this for you. Create your graph and turn the font red. For this process, I just used the dashes and wrote a scale below the axes. Here is an example, but it is not based on the data you are analyzing: Case 1 Case 2 14---------------------42 35-------------------------70 ________________________________________ 0 20 40 60 Your Solution: Sys Dys (121.2-124.8) (69.4-72.1) LDL 65 (109.7----117.7) 70 75 80 85 13. Based on the confidence intervals shown above, what conclusion can you draw about whether high systolic levels are related to LDL levels? Why? 90 95 100 105 110 115 120 Based on the info above they higher systolic BP 2 125 Part IV. Hypothesis Testing 14. Your researcher's claim is that the mean systolic blood pressure is less than 122 while the medical community contends that the average without hypertension is 122. Compose a hypothesis test with a level of significance of .01 to test your claim. Step 1. Determine parameter of interest and compose null and alternative hypotheses. Step 2. Determine the sample mean, sample standard deviation, and sample size. [Hint: You recorded these previously in Part II, #3-6] Step 3. Determine the likelihood that the population mean is actually less than 122 by completing a Hypothesis Test: One Mean in STAT DISK. Use significance of 0.01. Remember to change the pulldown option in Stat Disk to agree with the alternate hypothesis. Paste your results here. Step 4. State your conclusion. Your conclusion statement should include the p-value and level of significance to phrase your conclusion. Ho: =122 Ha: <122 4