AQA S1 2007 June — Question 2

Exam BoardAQA
ModuleS1 (Statistics 1)
Year2007
SessionJune
TopicConditional Probability
TypeBasic two-way table probability

2 The British and Irish Lions 2005 rugby squad contained 50 players. The nationalities and playing positions of these players are shown in the table.
\multirow{2}{*}{}Nationality
EnglishWelshScottishIrish
\multirow[b]{2}{*}{Playing position}Forward14526
Back8726
  1. A player was selected at random from the squad for a radio interview. Calculate the probability that the player was:
    1. a Welsh back;
    2. English;
    3. not English;
    4. Irish, given that the player was a back;
    5. a forward, given that the player was not Scottish.
  2. Four players were selected at random from the squad to visit a school. Calculate the probability that all four players were English.