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

Answer 1

Solution :

This is the left tailed test .

= 0.05

Z _0.05 = -1.65

Critical value = -1.65