Math 1040 – Review Answers
Chapters 1-3
1. (a) qualitative, nominal; (b) quantitative, interval; (c) qualitative, ordinal; (d) quantitative, ratio;
2. (a) stratified sample; (b) simple random, cluster, systematic, convenience.
3. (a) 16; (b) 10;
4. (a) Pie chart or bar graph.
5. (a) min=154, Q1=172, median=198, Q3=215, max=255; (b) 43; (c) 101.
6. (a) 196.3; (b) 198; (c) 28.2.
7. (a) 79.7; (b) 11.9.
8. (a) 0.6; (b) 68% ; (c) At least 75%.
9. (a) 5/14 = 0.36; (b) 9/14 = 0.64.
10. (a) 0.49; (b) 0.51.
11. (a) 0.58; (b) 0.42.
12. 495
13. 2730
Chapters 4-6
14. 0.9452
15. 124.75 and 145.25
16. 0.4772
17. (33.56, 59.28)
18. (0.1335, 0.2665)
19. (5811, 6589)
20. 25
21. (0.2196, 0.5263)
22. (a) 5; (b) 0.2503; (c) 0.2350.
23. (a) 0.2240; (b) 0.5768.
24. (a) P(-1)=0.999; P(349)=0.001; (b) -0.65; 11.06.
25. 385 (assuming the confidence level is 95%)
