A psychologist investigates whether there is a relationship between hours spent revising and score on a 40-mark science test. Which is a suitable null hypothesis for this study?
There will be no relationship between hours spent revising and score on a 40-mark science test.
The more hours spent revising, the lower the score on a 40-mark science test.
There will be no difference in science test scores between pupils who revise and those who do not.
Does the number of hours spent revising affect score on a 40-mark science test?
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.