math

JUS520 Exam 2

I expect the answers to be organized neatly in a Word document. For all questions, use the 5-

step procedure that I have outlined. Each of the 5 steps is worth the following point values: Step

1 (8 points), Step 2 (2 points), Step 3 (5 points), Step 4 (5 points), and Step 5 (5 points). Paste all

relevant output.

1. You are interested in assessing the effectiveness of a domestic violence counseling program designed to decrease the number of domestic abuse incidents among convicted abusers. The

case files of ten offenders are randomly selected from the population of convicted abusers.

The number of abuse incidents (verbal or physical) six reported six months before the

implementation of the counseling program and six months following the completion of the

program are reported below. Using a .01 level of significance, test the hypothesis that the

number of abuse incidents was greater before participation in the counseling program.

Number of Abuse Incidents Before and After Implementation of Domestic Violence Counseling

Program

Offender number Before After

1 4 2

2 3 1

3 1 1

4 4 0

5 1 2

6 3 1

7 4 3

8 4 2

9 4 2

10 2 0

2. You have been hired by the mayor of a mid-sized city who wants to see if senior citizens and younger citizens differ in their attitudes toward a neighborhood watch program. Fifteen

citizens from each age group were randomly selected to give their opinions about the

effectiveness of the program on a 7-point scale (the higher the number, the more favorable

the attitude). Using the data below, test the hypothesis that there is no difference between the

two groups of citizens.

Younger Citizens Senior Citizens

5 3

5 4

7 5

7 7

7 4

6 4

7 3

6 4

5 4

7 3

5 5

7 4

6 2

7 3

6 2

3. A researcher undertakes a study of physical force incidences among a sample of correctional officers. The research is specifically interested in determining whether the use of force

differs depending on the height of the officer. The researcher selected a random sample of

45 officers in three different height categories and examines the number of times each of

those officers used physical force within the past 12 months. Use the data below to answer

the following questions:

(a) Test the hypothesis that there is a significant difference, overall, between the three height groups and display the means in a bar graph. (30)

(b) Using a post hoc analysis, write where the specific differences are between each of the possible pairwise comparisons of officers’ height. (10)

(c) Calculate the strength of the effect for height on officers’ use of physical force (5) (d) Based on all of these results, would you make any recommendations to your state

department of corrections regarding the hiring of correctional officers? Why or

why not? (5)

5’0” – 5’10” (X1) 5’11” – 6’4” (X2) Over 6’4” (X3)

0 3 4

3 3 5

1 1 6

1 2 2

0 4 3

2 3 4

2 5 5

0 1 6

2 2 8

0 0 7

2 1 2

1 2 1

3 0 3

1 3 5

2 2 3