Question

8 multiple choice 4 points select the most appropriate response. the multiplication rule says that p(a and b) = p(a) × p(b). what must be true about events a and b for this rule to apply? the events must be disjoint. the events must be independent. the events must be mutually exclusive. two of the above all of the above

Explanation:

The multiplication rule $P(A\ and\ B)=P(A)\times P(B)$ applies when events A and B are independent. Disjoint (mutually - exclusive) events have $P(A\ and\ B) = 0$ and do not follow this multiplication rule.

Answer:

B. The events must be independent.