A researcher predicted that pupils who revise with a quiz would score higher on a 20-word spelling test than pupils who reread their notes. The mean score for the quiz group was 12 and the mean score for the rereading group was 15.
Explain whether the researcher's hypothesis is supported by these results.
182 exam-style questions on OCR GCSE Psychology 7.1 Planning Research, covering 7.1.1 Hypotheses, 7.1.2 Variables, 7.1.3 Experimental Designs, 7.1.4 Populations and Sampling, 7.1.5 Ethical issues, and 7.1.6 Dealing with ethical issues and BPS Code. Each one has a worked solution and a mark scheme showing where the marks go.