CAIE S2 2011 June — Question 3

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2011
SessionJune
TopicPoisson Distribution
TypeState conditions only

3 The number of goals scored per match by Everly Rovers is represented by the random variable \(X\) which has mean 1.8.
  1. State two conditions for \(X\) to be modelled by a Poisson distribution. Assume now that \(X \sim \operatorname { Po } ( 1.8 )\).
  2. Find \(\mathrm { P } ( 2 < X < 6 )\).
  3. The manager promises the team a bonus if they score at least 1 goal in each of the next 10 matches. Find the probability that they win the bonus.