This is not step-by-step solution, it's the question/answers solution. MyStatLab has an option "View an Example" that has all the formulas. I have the works for all practice quizzes though. 1. A new type of screening for lung cancer, CT, has been developed.
2. A study of Machiavellian traits in salesmen was performed.
3. Consider the accompanying dot plots A and B. Complete the ANOVA table for both dot plots. Plot A: 6,7,8,8,9,10; 12,13,14,14,15,16. Plot B: 5,7,7,11,11,13; 10,10,12,16,18,18.
4. The data in the table to the right resulted from the experiment that utilized a completely randomized design.
Treatment 1 | Treatment 2 | Treatment 3 |
3.9 | 5.1 | 1.4 |
1.4 | 2.7 | 0.8 |
4.2 | 4.5 | 2.0 |
5.4 | 3.7 | |
2.0 |
5. The partially completed ANOVA for 3×4 factorial experiment with two replications is shown to the right:
Source | df | SS | MS | F |
A | - | 0.3 | - | - |
B | - | 6.6 | - | - |
AB | - | 8.7 | - | - |
Error | - | - | - | |
Total | - | 16.3 |
6. A study of four different types of egg housing system was performed.
Cage/M | Cage/L | Free/M | Free/L | Barn/M | Barn/L | Organic/M | Organic/L |
483 | 489 | 525 | 513 | 526 | 533 | 514 | 524 |
451 | 486 | 511 | 530 | 526 | 486 | 493 | 560 |
508 | 473 | 525 | 524 | 531 | 516 | 532 | 522 |
483 | 477 | ||||||
458 | 471 |
7. What conditions must n satisfy to make x^2 test valid?
8. The table to the right gives the breakdown of the root causes of a sample of 91 industrial accidents…Test using a=0.05.
System Cause | Number of Incidents |
Design | 28 |
Procedures | 26 |
Management | 24 |
Training | 13 |
Total | 91 |
9. Each day’s proportion of one week’s total truck traffic is shown in the table to the right…Test using a=0.01.
Proportion | Number | |
Monday | 0.194 | 93 |
Tuesday | 0.192 | 86 |
Wednesday | 0.182 | 80 |
Thursday | 0.178 | 69 |
Friday | 0.157 | 51 |
Saturday | 0.041 | 25 |
Sunday | 0.056 | 30 |
10. Find the rejection regions for a test of independence of two classifications: a). a=0.05, r=4, c=6; b). a=0.10, r=5, c=6; c). a=0.01, r=4, c=5.
11. Test the null hypothesis of independence of the two classifications. Test using a=0.05.
B1 | B2 | B3 | |
A1 | 40 | 71 | 42 |
A2 | 63 | 53 | 72 |
A3 | 31 | 38 | 30 |
12. A researcher examined the political strategies used by the ethnic groups worldwide in their fight for minority rights. Each in a sample of 277 ethnic groups…Conduct a test using a=0.10.
World Region | No Political Action (N) | Mobilization, Mass Action (M) | Terrorism, Rebellion, Civil War (T) | Totals |
A | 24 | 31 | 7 | 62 |
B | 32 | 23 | 4 | 59 |
C | 12 | 22 | 27 | 61 |
D | 39 | 36 | 20 | 95 |
Totals | 107 | 112 | 58 | 277 |