A health trust wants to investigate waiting-time experiences among 12,000 patients who attended three hospitals during one month. The hospitals treated 4800, 4200 and 3000 of these patients. A sample of 200 patients is required.
State the population.
Calculate the numbers to sample from the three hospitals.
State how the patients should be selected after these numbers have been found.
36 exam-style questions on CCEA A Level Maths 2.4 Statistical sampling, covering 2.4.1 Statistical sampling, 2.4.2 Statistical sampling, 2.4.3 Statistical sampling, and 2.4.4 Statistical sampling. Each one has a worked solution and a mark scheme showing where the marks go.