Math 3339 Final Exam Review Key:
Comprehensive Solutions and Insights
, Math 3339
Review for Final Exam - KEY
1. c. The interquartile range increases.
2. 0.003348589
3. --
4. b0 = y-intercept and b1= slope. Which of these will best explain the relationship
between x and y? b1 5. --
6. d . Deciding to go for the first down when his team will not get the first down.
7. 15/43
8. 9/20
9. a. [17.01, 26.79]
b. [29.75313, 170.9206] 10.
11. b. two-sample t-test for means
12. new mean = 5.64, new s=1.32
13. E[X] = 3.2, V[X] = 1.76
14. Median = 3.5 kg, shape is skewed right
15. b. A and C have reasonable intervals, but B does not.
16. [0.621, 0.779]
17. a. Fail to reject H0 at
b. Reject H0 at
c. two-sided t test vs. one-sided t
test.
18. a. 1/4 b. 3/4
b.
19. a. c. IT (higher R2 and lower
p-value)
Comprehensive Solutions and Insights
, Math 3339
Review for Final Exam - KEY
1. c. The interquartile range increases.
2. 0.003348589
3. --
4. b0 = y-intercept and b1= slope. Which of these will best explain the relationship
between x and y? b1 5. --
6. d . Deciding to go for the first down when his team will not get the first down.
7. 15/43
8. 9/20
9. a. [17.01, 26.79]
b. [29.75313, 170.9206] 10.
11. b. two-sample t-test for means
12. new mean = 5.64, new s=1.32
13. E[X] = 3.2, V[X] = 1.76
14. Median = 3.5 kg, shape is skewed right
15. b. A and C have reasonable intervals, but B does not.
16. [0.621, 0.779]
17. a. Fail to reject H0 at
b. Reject H0 at
c. two-sided t test vs. one-sided t
test.
18. a. 1/4 b. 3/4
b.
19. a. c. IT (higher R2 and lower
p-value)
