A researcher conducted a study using a repeated measures design to investigate whether ambient noise level affects concentration. Participants completed a proofreading task under two conditions: Condition A (high-volume background noise) and Condition B (low-volume background noise). The researcher recorded the number of spelling errors missed by each participant. The descriptive statistics are shown in Table 2 below.
| Condition A (High-volume noise) | Condition B (Low-volume noise) | |
|---|---|---|
| Mean spelling errors | 8.4 | 3.2 |
| Standard deviation | 2.1 | 1.1 |
Name an appropriate statistical test that could be used to analyse the difference in the number of spelling errors between the two conditions in Table 2. Explain why the test you have chosen would be a suitable test in this case.
121 exam-style questions on AQA A Level Psychology Inferential testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.