Question 6
Each day Sarah travels to school by either bus or bike.
On Thursday, the probability she travels by bus is 0.7.
If Sarah travels by bus on Thursday, the probability she travels by bus on Friday is 0.8. If she does not travel by bus on Thursday, the probability she travels by bus on Friday is 0.3.
a.[3]
Complete the probability tree diagram.
b.[3]
Work out the probability Sarah uses different types of transport on Thursday and Friday.
Conditional Probability Questions
28 exam-style questions on AQA GCSE Maths Conditional Probability. Each one has a worked solution and a mark scheme showing where the marks go.