Researchers wanted to investigate whether consuming a concentrated beetroot juice shot, known to increase nitric oxide levels, affects fine motor coordination. In a controlled laboratory environment, 60 participants completed a timed, highly precise wire-loop stability test.
The researchers manipulated whether the participants drank a 70 ml concentrated beetroot juice shot or a 70 ml beetroot-flavoured water placebo 30 minutes before the test. They recorded the duration (in seconds) taken by each participant to complete the wire-loop test without making an error.
State a two-tailed (non-directional) hypothesis for this study.
638 exam-style questions on Edexcel A Level Psychology Methods. Each one has a worked solution and a mark scheme showing where the marks go.