A psychologist wants to study the impact of a blue-light filtering software on the sleep quality of night-shift customer support agents at a telecommunications company called 'NovaCall'. The company has a total of 165 night-shift agents.
Describe how random sampling could be used to select a sample of 25 agents for this study.
201 exam-style questions on OCR A Level Psychology Planning and conducting research. Each one has a worked solution and a mark scheme showing where the marks go.