An experiment was conducted to investigate the effect of acoustic distraction on performance in a sustained attention task. The scores of twelve participants across two conditions are shown in Table 1.
Table 1: Scores on a sustained attention task (max 40) under two noise conditions
| Silence (Control) | Background Noise | ||
|---|---|---|---|
| Participant | Score | Participant | Score |
| a | 32 | a | 10 |
| b | 35 | b | 26 |
| c | 28 | c | 13 |
| d | 38 | d | 21 |
| e | 31 | e | 13 |
| f | 34 | f | 13 |
What is the mean score for the Background Noise condition group?
13
16
19.5
33
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.