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