To investigate the impact of "gamification" on public recycling habits, an environmental researcher conducted an observational study at a community park. They monitored two adjacent recycling bins: one was fitted with a basketball-hoop-style lid designed to encourage throwing cans and bottles in (the nudged condition), while the other was a standard recycling bin with a basic flap lid. Over a continuous five-hour observation period, the researcher recorded every item of recycling successfully deposited by adults and children.
The recorded data is summarised below:
| Adults | Children | |
|---|---|---|
| Basketball-hoop recycling bin | 37 | 45 |
| Standard flap recycling bin | 21 | 17 |
Calculate the percentage of recycled items that were deposited into the basketball-hoop recycling bin. Show your workings and present your answer to two significant figures.
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.