Assume that when victims are asked how well their needs were met by the criminal
ID: 3040751 • Letter: A
Question
Assume that when victims are asked how well their needs were met by the criminal justice system on a scale of 1 (not met at all) to 5 (met completely), the average response is 3.24. In a study of 130 victims, Brewster (2001) found that the average response to how police officers met victims’ needs was 2.90 (standard deviation = 1.44). Perform a hypothesis test to determine if police officers respond less well to victims’ needs than the criminal justice system as a whole. Use a 0.05 level of statistical significance. What's your critical value?
-1.65
-1.96
1.65
1.96
Explanation / Answer
Here we will use Normal distribution , and alpha level is 5%
This is left tailed test
Use normal table or Excel function to find critical value
NORMSINV(0.05)
= -1.65
Option A is Correct