In 2012, a study investigating social conformity and environmental behaviours surveyed 1,200 university students. It found that 900 students routinely used single-use disposable coffee cups, while 300 used reusable cups.
In 2022, a replication study with another 1,200 university students found that 240 used single-use disposable cups, while 960 used reusable cups.
Calculate the ratio of single-use cup users to reusable cup users in 2022. Give your answer in its simplest form.
Show your workings.
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.