The chance of a webpage visitor clicking on a link is 0.15. Angela 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 90 visitors is taken and 20 clicked on the link.
Stating your hypotheses clearly test, at the 5% level of significance, whether or not there is evidence to support Angela's belief.
Practise Edexcel A Level Maths Hypothesis Testing with exam-style questions for A Level Maths. 8 questions covering 7.1 Hypothesis Testing, 7.2 Finding Critical Values, 7.3 One-Tailed Tests, and 7.4 Two-Tailed Tests, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
