An educational psychologist investigated study-environment preferences among a sample of 200 high school students during exam preparation. The results showed that 54 students preferred studying in a quiet library, while 90 students preferred studying at home with background music.
What is the simplified ratio of students who prefer studying in a quiet library to those who prefer studying at home with background music?
5:35:35:3
3:53:53:5
3:83:83:8
5:85:85:8
513 exam-style questions on OCR A Level Psychology Data recording, analysis and presentation. Each one has a worked solution and a mark scheme showing where the marks go.