An experimental psychologist investigated how cabin lighting color affects driver reaction times during simulated emergency scenarios. To do this, he conducted an independent measures experiment. One group of participants completed a simulated emergency hazard perception test with high-intensity blue light illuminating the cabin. A second group of participants completed the exact same hazard perception test under warm amber light. The reaction times of the participants were measured in milliseconds (ms).
| Reaction Times (ms) | |
|---|---|
| High-Intensity Blue Light | Warm Amber Light |
| 280 | 310 |
| 260 | 330 |
| 295 | 315 |
| 240 | 340 |
| 310 | 290 |
| 275 | 325 |
| 255 | 310 |
| 290 | 350 |
| 265 | 305 |
| 285 | 315 |
| 300 | 345 |
| 250 | 320 |
Outline one conclusion that could be made about this study if p<0.01 p < 0.01\,p<0.01 appeared in the significance statement after conducting an appropriate statistical test.
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.