Please check answeres and fill in section (I.) 2. Researchers know that the aver

ID: 3320713 • Letter: P

Question

Please check answeres and fill in section (I.)

2. Researchers know that the average rate of violence within intimate relationships is 20 men or women per minute in the US (SD=2.47), according to the National Coalition against Domestic Violence (NCADV). The local chapter of the NCADV is concerned about area rates of domestic violence because the local average is 23.20 (N=265). They would like to determine if the local rate is the same as the national rate. (Total 29 pts)

A. What are the independent and dependent variables and how are each scaled (1 pt each; Total 4 pts)?

Independent:_ gender

Scaling:__nominal

Dependent:_ violence within intimate relationship

Scaling: Ordinal scaling

B. What test should be used (4 pts)? 1 sample t test

C. Why that test (2 pts)? We have a sample size less than 30 and the unknown population variance

D. What are the null and alternative hypotheses for that test (4 pts)?

There is no significant relation between gender scaling and violence within intimate relation H_0: µ1=µ2

There is a significant relation between gender scaling and violence within intimate relation H_A: µ1µ2

E. What are that tests assumptions (3 pts)?

1. Sample are normally distributed.

2. Data sample are unbiased and representative of total population.

3. The sample are randomly selected.

F. What are the df (2 pts)? Sample size = n = 265 df = n - 1 = 265 - 1= 264

G. What is the critical value for p=.05 (2 pts)? Critical value for p = 0.05 = 1.9690

H. If the researchers calculate a test statistic of 1.78, should they (2 pts)? We would retain the null hypothesis because 1.78 < 1.9690

I. Interpret the findings (6 pts):

Explanation / Answer

SOlution:-