A group of researchers investigated whether the physical attractiveness of a defendant (attractive vs unattractive) influences jury decision-making. They recorded the frequency of guilty and not-guilty verdicts for both conditions. The researchers calculated a Chi-squared value of 3.52 with df=1df = 1df=1 for a two-tailed hypothesis.
Analyse the results of the Chi-squared test using the table below to determine whether the defendant's physical attractiveness significantly affected jury verdicts.
| Level of significance for a one-tailed test | ||||||
|---|---|---|---|---|---|---|
| 0.10 | 0.05 | 0.025 | 0.01 | 0.005 | 0.0005 | |
| Level of significance for a two-tailed test | ||||||
| df | 0.20 | 0.10 | 0.05 | 0.025 | 0.01 | 0.001 |
| 1 | 1.64 | 2.71 | 3.84 | 5.02 | 6.64 | 10.83 |
| 2 | 3.22 | 4.61 | 5.95 | 7.38 | 9.21 | 13.82 |
Practise Edexcel A Level Psychology Content with exam-style questions for A Level Psychology. 1,059 questions covering Central nervous system and neurotransmitters, Effect of recreational drugs on transmission, Brain structure and aggression, Evolution and natural selection, Freud's psychodynamic explanation of aggression, Role of hormones in aggression, Individual differences, and Developmental psychology, 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.
