作者bluesnow4425 (衰弱残)
看板Statistics
标题[问题] 有关机率的问题..
时间Fri Dec 5 06:38:59 2008
自修时写的题目 可是他只有答案我真的不知道我错在哪ˊˋ
Two events are complementary when
A. the sum of their probabilities equal one.
B. the joint probability of the two events is one.
C. they are both independent and mutually exclusive.
D. None of the above
请教各位板大
为什答案不是A
而是D啊?
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