Dr Kovac investigated whether listening to binaural beats during high-concentration tasks reduces the number of programming errors made by software developers. He recorded the total number of syntax errors made by two separate groups of developers over a three-week period. The developers who listened to binaural beats had a mean of 4.2 errors, whereas the developers who worked in silence had a mean of 8.7 errors.
State an appropriate inferential statistical test that Dr Kovac could use to analyse his data.
Practise Edexcel A Level Psychology Methods with exam-style questions for A Level Psychology. 638 questions, matched to the Edexcel A Level Psychology (9PS0) 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.