Exam-Style Problem

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June 2010 p62 q6
2948

A small farm has 5 ducks and 2 geese. Four of these birds are to be chosen at random. The random variable \(X\) represents the number of geese chosen.

  1. Draw up the probability distribution of \(X\).
  2. Show that \(E(X) = \frac{8}{7}\) and calculate \(\text{Var}(X)\).
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