OCR H240/02 2020 November — Question 13

Exam BoardOCR
ModuleH240/02 (Pure Mathematics and Statistics)
Year2020
SessionNovember
TopicConditional Probability
TypeMulti-stage game or match outcomes

13 Andy and Bev are playing a game.
  • The game consists of three points.
  • On each point, \(\mathrm { P } (\) Andy wins \() = 0.4\) and \(\mathrm { P } (\) Bev wins \() = 0.6\).
  • If one player wins two consecutive points, then they win the game, otherwise neither player wins.
    1. Determine the probability of the following events.
      1. Andy wins the game.
      2. Neither player wins the game.
Andy and Bev now decide to play a match which consists of a series of games.
  • In each game, if a player wins the game then they win the match.
  • If neither player wins the game then the players play another game.
  • Determine the probability that Andy wins the match.