A group of researchers conducted an experiment to investigate the effect of background noise level on task performance. Group A completed a complex spatial reasoning test in a noisy environment (75 decibels of white noise), while Group B completed the exact same spatial reasoning test in a quiet environment (30 decibels of white noise). The researchers measured performance by counting the number of correct answers achieved out of 30.
Write a suitable directional (one-tailed) hypothesis for this study.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.