A sports physiologist is investigating whether a new compression sock design reduces muscle recovery time after a 10 km run compared to standard athletic socks.
Ten competitive long-distance runners are recruited. Each runner completes a 10 km run on two separate weekends. On one weekend, they wear the compression socks, and on the other weekend, they wear the standard socks, with the order of conditions randomised for each participant. The recovery time, measured as the number of hours until their blood lactate concentration returns to baseline level, is recorded.
The researcher decides to use a paired (related) t-test to analyse the raw data from this study.
Explain three reasons for this choice in the context of this study.
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.