The chance of a webpage visitor clicking on a link is 0.10. Chloe believes that increasing the font size for the link will increase the proportion of visitors that click on the link.
After increasing the font size a sample of 100 visitors is taken and 16 clicked on the link.
Stating your hypotheses clearly test, at the 5% level of significance, whether or not there is evidence to support Chloe's belief.
153 exam-style questions on Edexcel A Level Maths Hypothesis Testing, covering 7.1 Hypothesis Testing, 7.2 Finding Critical Values, 7.3 One-Tailed Tests, and 7.4 Two-Tailed Tests. Each one has a worked solution and a mark scheme showing where the marks go.