The chance of a component produced by a factory being faulty is 0.10. Marcus believes that a change to the production process will increase the proportion of faulty components.
After the change, a sample of 100 components is taken and 17 are faulty.
Stating your hypotheses clearly test, at the 5% level of significance, whether or not there is evidence to support Marcus's belief.
33 exam-style questions on Edexcel AS 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.