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Conditional Probability

Conditional Probability

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Question 8

Each day Paul wears either a black tie or a red tie to work.

On Monday the probability he wears a black tie is 0.6

If Paul wears a black tie on Monday, the probability that he will wear a black tie on Tuesday is 0.35 If he does not wear a black tie on Monday, the probability that he will wear a black tie on Tuesday is 0.68

a.

Complete the probability tree diagram.

A probability tree diagram for Paul's tie choices on Monday and Tuesday.

[2]
b.

Work out the probability Paul wears different coloured ties on Monday and Tuesday.

[3]
Markscheme

Conditional Probability Questions

  1. GCSE
  2. /Maths
  3. /Conditional Probability

28 exam-style questions on AQA GCSE Maths Conditional Probability. Each one has a worked solution and a mark scheme showing where the marks go.

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