CAIE A-Level Mathematics 6.1.3 Poisson distribution

CAIE A-Level Mathematics 6.1.3 Poisson distribution
Cambridge International AS & A Level Mathematics 9709 syllabus for exams in 2028, 2029 and 20302028–2030

Practise deciding when Poisson is a suitable model for random events and using it to answer context-based probability questions.

How this is tested

  • 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

Question 4(b)(i)

[Maximum number: 1]

A sports fan produces a magazine each month.

On average the number of copies, X, of the magazine sold per month is 123.4.

State one condition for X to have a Poisson distribution.
You are now given that X has a Poisson distribution.