CAIE A-Level Mathematics 6.1.3 Poisson distribution
Practise deciding when Poisson is a suitable model for random events and using it to answer context-based probability questions.
- Syllabus
- 2028–2030
- Course
- Mathematics 9709
- Level
- A2
Exam points
- apply a constant average rate to model arrivals or events over a stated time
- form inequalities with e^-λ to find a waiting time for a required probability
6.1.3—Poisson distribution question 1
[Maximum number: 1]
The number, X, of books received at a charity shop has a constant mean of 5.1 per day.
State, in context, one condition for X to be modelled by a Poisson distribution.
Assume now that X can be modelled by a Poisson distribution.
Books received independently or singly or randomly.
B1
OE. Must be in context.
If more than one condition given, ignore extras.
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