Connect the ideas
Use equally likely complete outcomes when counting probabilities.
Multiply stage choices; reduce available choices when repetition is not permitted.
A condition restricts the denominator to the given group.
Multiply conditional branches along a path and add disjoint paths.
Replacement rules determine whether draw probabilities change.
Simulation frequencies estimate probabilities and vary between finite runs.
Practice tests
Complete each paper and show your working.
Probability — Practice test 1
16 questions · 40 marks · 60 minutes · Scientific calculator
Probability — Practice test 2
16 questions · 45 marks · 60 minutes · Scientific calculator
Probability — Applications test
16 questions · 47 marks · 60 minutes · Scientific calculator