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.
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.
举一反三
- Which statements of the event listener are true A: Multiple listeners can be attached to one component. B: Only one listener can be attached to one component. C: One listener can receive and process the events from multiple components. D: One listener can receive and process the events from only one component.
- If two events are mutually exclusive, they have no outcomes in common.
- If two events are mutually exclusive, then A: a. their probabilities can be added. B: b. they may also be collectively exhaustive. C: c. the joint probability is equal to 0. D: d. if one occurs, the other cannot occur. E: e. all of the above.
- If two events are mutually exclusive, the probability that they both will occur at the same time is :（） A: 0.50. B: 1.00. C: 0.00.
- If A and B cannot occur at the same time the events are called mutually exclusive.