A trial reports that 48 of 400 patients given drug A and 27 of 300 patients given drug B experience at least one side effect. Both drugs improve symptoms in the same proportion of patients.
Calculate the side-effect percentage for drug B.
[2 marks]AQA GCSE Biology · Higher · Paper 1
Keep the marks you know.
This is our AQA Combined Science Trilogy (8464) course. It covers most of AQA Biology 8461; our timed papers are Combined Science papers.
One Paper 1 question. See each mark, then try a fresh one.
- Question
- Fresh try
- Your paper
Next
Sit a timed Biology paper
The same topics in a 70-mark paper. Every mark marked from your working.
Start the paperGCSE Science course
GCSE Science Pro
£119 once
At least 12 months of access
By paying you agree to our Terms and get access straight away, which ends your 14-day cancellation right.
Start the free lessonNo VAT is charged.
AQA GCSE Biology Higher, Paper 1
- 8461/1H
- 1 hour 45 minutes
- 100 marks
- Cell biology, organisation, infection and response, bioenergetics
2 papers · 200 marks. Paper 1 covers topics 1 to 4, Paper 2 topics 5 to 7. Questions here are original practice, not past papers.
Covers the Combined Science content, most of AQA Biology 8461. Biology-only topics such as plant disease, plant hormones, cloning and food production are not included yet.