Research suggests that 'nudging' can promote healthy habits. A researcher conducted an observational study in a busy university department lobby to investigate whether a simple visual nudge increases hand-sanitiser usage. They monitored two identical hand-sanitiser dispensers positioned on opposite sides of the lobby entrance: one dispenser featured a prominent colourful arrow graphic pointing downward to the nozzle, while the other dispenser had no graphic.
Over a three-hour morning period, the researcher recorded the category of user (Student or Staff member) and which dispenser they used. The data is presented in the table below:
| Students | Staff | |
|---|---|---|
| Dispenser with graphic | 22 | 10 |
| Dispenser without graphic | 14 | 12 |
What does the analysis from the Chi-square test inform us regarding the use of the two different sanitiser dispensers by the two groups of users 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.