A researcher investigated whether there was a correlation between weekly hours spent exercising and self-reported mental well-being scores.
The researcher randomly selected 20 employees from a local software engineering firm.
Each employee was asked: 'To the nearest hour, how many hours did you spend exercising over the last 7 days?' They then rated their mental well-being over the same period on a scale of 1 (very poor) to 10 (excellent).
The researcher hypothesized that there would be a significant positive correlation between the two co-variables.
Explain what is meant by a Type II error in the context of this study.
121 exam-style questions on AQA A Level Psychology Inferential testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.