If the outcome of event A is not affected by event B, then events A and B are said to be:（）
A: mutually exclusive.
B: statistically independent.
C: collectively exhaustive.
A: mutually exclusive.
B: statistically independent.
C: collectively exhaustive.
举一反三
- If event A and event B cannot occur simultaneously, then events A and B are said to be:（） A: collectively exhaustive. B: statistically independent. C: mutually exclusive.
- If the event A is not affected by event B, then events A and B are<br/>said to be(<br/>). A: mutually exclusive. B: independent. C: collectively exhaustive. D: None of the above.
- If two equally likely events A and B are mutually exclusive and collectively exhaustive, what is the probability that event A occurs? A: 0 B: 0.5 C: 1 D: cannot be determined from the information given
- If two events are mutually exclusive and collectively exhaustive, what is the probability that both occur? A: 1 B: 0.5 C: 0 D: cannot be determined from the information given
- Which of the following statements is most accurater A set of events is mutually exclusive means:（） A: the events cover all possible outcomes. B: only one event can occur at a time. C: the sum of all the events' probabilities equals one.