A researcher is testing whether the format used to present information affects understanding. Forty adults are allocated to two groups. The first group reads the same 600-word article on a tablet screen, while the second group reads a printed copy. Each adult then answers 12 multiple-choice questions, and the number answered correctly is recorded.
State a null hypothesis for this experiment.
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.