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 AS Level Maths Hypothesis Testing with exam-style questions for AS Level Maths. 8 questions covering Hypothesis Testing, Finding Critical Values, One-Tailed Tests, and Two-Tailed Tests, matched to the Edexcel AS Level Maths (8MA0) specification and written in Paper 1 and Paper 2 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.
