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.
Practise AQA A Level Psychology Scientific processes with exam-style questions for A Level Psychology. 689 questions, matched to the AQA A Level Psychology (7182) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
