A marine biologist is investigating whether installing an acoustic deterrent device (ADD) on offshore wind turbine platforms reduces the occurrence of harbour porpoises within a 1 km radius. The researcher monitors and records the frequency of porpoise detections during standard observation blocks under two conditions (ADD Active vs ADD Inactive/Control) across two distinct tidal states (Ebb Tide and Flood Tide).
The data showing the frequency of porpoise detections under both conditions is presented in the table below:
| Ebb Tide | Flood Tide | |
|---|---|---|
| ADD Active | 14 | 19 |
| ADD Inactive (Control) | 32 | 28 |
Explain what a Type I error would represent in the context of 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.