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CAIE A-Level Mathematics A2 6.1.2 The Fact That If X Po Questions

Practise using Poisson mean and variance relationships to calculate spread and standard deviation.

Syllabus
2028–2030
Course
Mathematics 9709
Level
A2

Exam points

  • use the equality of the Poisson mean and variance
  • calculate Poisson variance and standard deviation
  • interpret Poisson parameters in context

CAIE A-Level Mathematics A2 6.1.2 The Fact That If X Po Questions question 1

[Maximum number: 1]

The number of absences per week by workers at a factory has the distribution Po⁡(2.1)\operatorname{Po}(2.1).

Find the standard deviation of the number of absences per week.

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