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2.3.10 Conditional probabilities (A-level only)

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Question 9

Events A A\,A and B B\,B satisfy P(A)=516\displaystyle P(A)=\frac{5}{16}P(A)=165​, P(B)=12\displaystyle P(B)=\frac12P(B)=21​ and P(A∣B)=14\displaystyle P(A\mid B)=\frac14P(A∣B)=41​.

a.

Find P(A∩B)P(A\cap B)P(A∩B).

[2]
b.

Find P(B′∣A)P(B'\mid A)P(B′∣A).

[3]
Markscheme

2.3.10 Conditional probabilities (A-level only) Questions

  1. A Level
  2. /Maths
  3. /2.3.10 Conditional probabilities (A-level only)

164 exam-style questions on OCR (MEI) A Level Maths 2.3.10 Conditional probabilities (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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