The multiplication rule

Exercise and reference answers

Questions

1. Question

   P(E ∩ F) equals

   Choices

   1. P(E) + P(F|E)
   2. P(E) ÷ P(F)
   3. P(E) P(F|E)

   Correct choice

   P(E) P(F|E)

2. Question

   P(E ∩ F) also equals

   Choices

   1. P(F) P(E|F)
   2. P(F) − P(E)
   3. P(E|F)

   Correct choice

   P(F) P(E|F)

3. Question

   The multiplication rule needs

   Choices

   1. the events to be independent
   2. the conditioning event to have nonzero probability
   3. a partition

   Correct choice

   the conditioning event to have nonzero probability

Explanation