Dr. Sterling conducted a study comparing the empathy scores of two groups of violent offenders (a rehabilitation group and a control group) using a Mann–Whitney U test. His calculated (observed) value of U U\,U was 14. The critical value of U U\,U for a one-tailed (directional) hypothesis at p≤0.05 p \le 0.05\,p≤0.05 is 15.
Determine whether Dr. Sterling's results are statistically significant.
Practise Edexcel A Level Psychology Research methods and skills with exam-style questions for A Level Psychology. 657 questions covering Research methods and skills, matched to the Edexcel A Level Psychology (9PS0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
