Classify event relationships as independent, mutually exclusive or neither.

Classify event relationships as independent, mutually exclusive or neither.

6 marks
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Consider events A, B such that \(P(A) \neq 0\), \(P(A) \neq 1\), \(P(B) \neq 0\), and \(P(B) \neq 1\). In each of the situations (a), (b), (c) below state whether \(A\) and \(B\) are mutually exclusive \((M)\); independent \((I)\); neither \((N)\).

  1. \(P(A|B) = P(A)\)

  2. \(P(A ∩ B) = 0\)

  3. \(P(A ∩ B) = P(A)\)

[6]

Solution:

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Answer:(c) \(P(A\cap B)=P(A)\) means A is contained in B; with all probabilities strictly between 0 and 1, the events are neither mutually exclusive nor independent, so N.

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