QNT561 QNT/561 Week 5 Problem Set - 27755

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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
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