Technical Mathematics, Sixth Edition

D.21. CHAPTER 21

Exercise 1

1. Discrete

3. Categorical

5. Categorical

Exercise 2

17.

3
4	8.5	8.9	9.6	8.4	9.4
5	4.8	9.3	9.3	9.3	0.3
6	1.4	9.3	6.3	9.3
7	2.5	1.2	1.4	4.5	3.6	1.4	4.9	2.7	2.8
8	8.2	4.6	9.4	5.7	3.8
9	9.2	2.4
10

Exercise 3

1. 77

3. 145 lb

5. $796

7. 81.6

9. 157.5

11. None

13. 59.3 min

15. 76

17. 149 lb

19. $792

21. 116, 142, 158, 164, 199

23.

25. 83

27. 4.28, 7.40 and 10.02; 5.74

29. 697, 26.4

31. 201, 14.2

Exercise 4

1. 8/15

3. 0.375

5. 1/9

7. 1/36

9. 0.63

11. 5/18

13. 0.133

15. 0.230

17. 0.367

21. 0.117

23. 7.68 × 10⁻⁶

Exercise 5

1. 0.4332

3. 0.2119

5. 620 students

7. 36 students

9. 1

Exercise 6

1. 69.47 ± 0.34 in.

3. 2.35 ± 0.24 in.

5. 164.0 ± 2.88

7. 16.31 ± 2.04

9. 0.250 ± 0.031

Exercise 7

Exercise 8

1. 1.00

3. 1.00

5. y = −4.83x − 15.0

Review Problems

1. Continuous

3. Categorical

5.

7. 5/36

9. 0.75

11. 0.1915

13. 0.3446

15. 81

17.

19.

Data	Cumulative Absolute Frequency	Cumulative Relative Frequency
Under 112.5	1	1/40 ...