# Final Exam Week 8.docx - Final Exam Week 8 Chapters 1-12 44...

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Final Exam Week 8 Chapters 1-12 44 questions, 200 points Place answers here 1. A 23. T 2. C 24. F 3. D 25. T 4. C 26. T 5. A 27. T 6. B 28. (27.929, 35.404) 7. A 29. 42 8. C 30. 5.88 9. D 31. Yes 10. T 32. Yes 11. T 33. No 12. F 34. (-13.05654, -3.743455) 13. T 35. Yes 14. T 36. Yes 15. T 37. No 16. T 38. Source of Variation SS df MS F Between Groups 1524. 4 3 508.13 2.186 Within Groups 3719. 48 16 232.46 75 Total: 5243. 88 19 17. F 39. No 18. T 40. No 19. T 41. Yes. The characteristics disease stage (p=0.0261) and % with insurance (p=0.0352) are significantly different; their p- values are less than 0.05. 20. F 42. Chi-square test 21. F 43. Sample mean= 1196.25 Sample SD= 1806.828 Sample Median= 520
22. F 44. Yes, if the level of significance is 5% then there is a statistically significant difference in baseline characteristics between treatment groups. % Female and % with Diabetes have p-values less than 5%, therefore there is a significant difference between the treatments for these variables. Multiple Choice 1. Which of the following individuals is likely to be excluded from a clinical trial?
2. Randomization in a clinical trial is defined as which of the following?
3. Assuming 50,000 individuals in the United States are diagnosed every year, and of those individuals diagnosed with HIV each year, approximately 33,500 individuals diagnosed with HIV are gay or bisexual males. What prevalence of the new HIV cases are from members of the population of gay or bisexual males?
4. Ethnicity is best described as which type of variable? A) Dichotomous variable B) Ordinal variable C) Categorical variable D) Continuous variable
5. A researcher wants to determine the sensitivity of mammograms to determine how effective they are at diagnosing women who have breast cancer. Assume the researcher obtained the above results from a study, calculate and interpret the sensitivity of mammograms for detecting breast cancer. Frequency of Breast Cancer Cases Frequency of Non-Cancer Cases Frequency of Individuals Who Screened Positive 17 Frequency of Individuals Who Screened Negative 8 77 5