CAIE S1 2016 November — Question 2

Exam BoardCAIE
ModuleS1 (Statistics 1)
Year2016
SessionNovember
TopicCombinations & Selection

2 Noor has 3 T-shirts, 4 blouses and 5 jumpers. She chooses 3 items at random. The random variable \(X\) is the number of T-shirts chosen.
  1. Show that the probability that Noor chooses exactly one T-shirt is \(\frac { 27 } { 55 }\).
  2. Draw up the probability distribution table for \(X\).