A veterinary epidemiologist is conducting a biosecurity audit to monitor for a highly infectious avian influenza strain in a rural county.
Explain how the epidemiologist could use simple random sampling to select a sample of 45 commercial poultry farms from a regional registry containing 450 poultry farms to participate in the monitoring program.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.