Priya plays a computer game. She assumes that each attempt is independent and knows from past experience that the probability of completing a level on an attempt is 0.15.
Priya makes 10 attempts. Calculate the probability that at least 3 of the attempts will complete the level.
Priya believes she has improved and the chance of completing the level on an attempt is greater than 0.15. She makes 10 attempts and completes the level 5 times. Stating your hypotheses clearly test, at the 5% level of significance, whether or not there is evidence to support Priya'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.