单选题 If event A and event B cannot occur simultaneously, then events A and B are said to be:

A、

A. collectively exhaustive.
B、

B. statistically independent.
C、

C. mutually exclusive.

【正确答案】 C

【答案解析】If two events cannot occur together, the events are mutually exclusive. A good example is a coin flip: heads and tails cannot occur on the same flip.