Under what circumstances can the conditional probability of an event be equal to its marginal probability?
- When the event is certain
- When the event is dependent on all other events
- When the event is impossible
- When the event is independent of all other events
The conditional probability of an event A given an event B equals the marginal probability of A when A and B are independent. This is because the occurrence of B does not change the probability of A if they are independent.
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