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Conditional Probability

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Question 11

The Venn diagram shows the probabilities associated with three events, AAA, B B\,B and CCC. A Venn diagram has three horizontally arranged overlapping circles labelled A, B and C, with probabilities in the A-only, A∩B, B-only, B∩C and C-only regions, and a probability outside the circles.

a.

Write down the two events that are mutually exclusive.

[1]
b.

Given that P(B∣C)=0.5P(B | C) = 0.5P(B∣C)=0.5, find the value of ppp.

[2]
c.

Given also that A A\,A and B B\,B are independent find the values of q q\,q and rrr.

[4]
Markscheme

Conditional Probability Questions

  1. A Level
  2. /Maths
  3. /Conditional Probability

368 exam-style questions on Edexcel A Level Maths Conditional Probability, covering 2.1 Set Notation, 2.2 Conditional Probability, 2.3 Conditional Probabilities in Venn Diagrams, 2.4 Probability Formulae, and 2.5 Tree Diagrams. Each one has a worked solution and a mark scheme showing where the marks go.

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