The discrete random variable X∼B(8,0.25)X \sim B(8, 0.25)X∼B(8,0.25)
Find P(X≥2)P(X \geq 2)P(X≥2)
A museum expects 25% of visitors to buy a guidebook. On one particular day, a random sample of 12 visitors is taken and 7 of them buy a guidebook. Test at the 1% significance level whether the proportion of visitors buying a guidebook has increased. State your hypotheses clearly.
State the conclusion you would have reached if a 5% significance level had been used for this test.
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.