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Quick questions on The Poisson and geometric distributions: conditions, mean and variance, and approximations - OCR A-Level Further Maths A

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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For X∼Po(3)X \sim \text{Po}(3), find P(X=0)\mathrm{P}(X = 0). [2 marks]
What is q2?
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A geometric variable has p=0.25p = 0.25. State its mean. [1 mark]

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