Dr. Mercer conducted an observational study investigating whether there is an association between treatment type (Cognitive Behavioural Therapy or Mindfulness-Based Stress Reduction) and program completion status (completed the program or dropped out early). He analysed his data using a Chi-Square test of association (df=1df = 1df=1).
Dr. Mercer formulated a two-tailed (non-directional) hypothesis and chose a significance level of p≤0.05p \le 0.05p≤0.05. His calculated Chi-Square value was χ2=3.52\chi^2 = 3.52χ2=3.52.
Using the table of critical values below, determine whether there is a significant association between treatment type and program completion status.
| Significance level (ppp) for a two-tailed test | 0.10 | 0.05 | 0.01 |
|---|---|---|---|
| Critical value (df=1df = 1df=1) | 2.71 | 3.84 | 6.63 |
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 questions, 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.