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Conditional Probability

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Question 37

The events A A\,A and B B\,B are such that P(A)=0.3P(A) = 0.3P(A)=0.3 and P(A∪B)=0.7P(A \cup B) = 0.7P(A∪B)=0.7.

a.

Find P(A′∩B′)P(A' \cap B')P(A′∩B′).

[2]
b.

Find P(A′∩B)P(A' \cap B)P(A′∩B).

[2]
c.

Given also that the events A A\,A and B B\,B are independent, find P(B)P(B)P(B).

[4]
d.

Find P(A′∪B′)P(A' \cup B')P(A′∪B′).

[2]

Conditional Probability Questions

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

Practise Edexcel A Level Maths Conditional Probability with exam-style questions for A Level Maths. 152 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank