A cognitive psychologist wants to determine if there is a significant difference in the reaction times (measured in milliseconds) of participants completing a vigilance task under two conditions: high background noise and quiet. The researcher uses an independent groups design. The reaction time data is found to be normally distributed and the two groups display homogeneity of variance.
Which inferential statistical test should the psychologist use to analyse this data?
Related ttt-test
Mann-Whitney UUU test
Unrelated ttt-test
Wilcoxon signed-ranks test
644 exam-style questions on OCR A Level Psychology Research methods and techniques. Each one has a worked solution and a mark scheme showing where the marks go.