Skip to content

Course home

Sign up

Probability

EasyMedium
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116
Question 14
59%

The Venn diagram below shows three events AAA, B B\,B and CCC.

Venn diagram for Question 2 showing three sets A, B, and C. Sets A and B overlap on the left, while set C is separate on the right. The regions are labeled as follows: A only: 0.2; B only: q; C only: r; A and B only: p; The region outside all three sets is labeled 0.1.

a.

Write down two of the events that are mutually exclusive.

[1]
b.

The probability of A A\,A is 0.4

The probability of A A\,A or B B\,B is 0.7

Find the values of ppp, q q\,q and rrr.

[3]
c.

State, giving a reason, whether or not the events A A\,A and B B\,B are statistically independent.

[2]
Markscheme

Probability Questions

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

186 exam-style questions on Edexcel A Level Maths Probability, covering 5.1 Calculating Probabilities, 5.2 Venn Diagrams, 5.3 Mutually Exclusive and Independent Events, and 5.4 Tree Diagrams. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank