CAIE S1 2015 November — Question 3

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2015
SessionNovember
TopicIndependent Events
TypeBoth independence and mutual exclusivity

3 Ellie throws two fair tetrahedral dice, each with faces numbered 1, 2, 3 and 4. She notes the numbers on the faces that the dice land on. Event \(S\) is 'the sum of the two numbers is 4 '. Event \(T\) is 'the product of the two numbers is an odd number'.
  1. Determine whether events \(S\) and \(T\) are independent, showing your working.
  2. Are events \(S\) and \(T\) exclusive? Justify your answer.