Research suggests that 'nudging' individuals towards pro-environmental choices can be highly effective. A psychologist conducted an observational study in a university campus cafe to investigate whether placing a 'Green Leaf' environmental sticker on a self-service coffee machine influenced the choice of using a reusable cup instead of a disposable paper cup. The researcher observed and recorded the cup choices of students and staff over a three-day period during peak lunchtime hours (12 pm to 2 pm).
The data showing the frequency of reusable cup choices under both conditions is presented in the table below:
| Students | Staff | |
|---|---|---|
| With 'Green Leaf' Sticker | 24 | 15 |
| Without Sticker (Control) | 11 | 13 |
Explain what it would mean if there was a 'Type 1 error' in this study.
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.