Edexcel S1 2013 January — Question 7

Exam BoardEdexcel
ModuleS1 (Statistics 1)
Year2013
SessionJanuary
TopicPrinciple of Inclusion/Exclusion
TypeThree Events with Independence Constraints

  1. Given that
$$\mathrm { P } ( A ) = 0.35 , \quad \mathrm { P } ( B ) = 0.45 \quad \text { and } \quad \mathrm { P } ( A \cap B ) = 0.13$$ find
  1. \(\mathrm { P } ( A \cup B )\)
  2. \(\mathrm { P } \left( A ^ { \prime } \mid B ^ { \prime } \right)\) The event \(C\) has \(\mathrm { P } ( C ) = 0.20\)
    The events \(A\) and \(C\) are mutually exclusive and the events \(B\) and \(C\) are independent.
  3. Find \(\mathrm { P } ( B \cap C )\)
  4. Draw a Venn diagram to illustrate the events \(A , B\) and \(C\) and the probabilities for each region.
  5. Find \(\mathrm { P } \left( [ B \cup C ] ^ { \prime } \right)\)