集合 这题做不太出啊
twoeventcanddaresuchthat:P(c)=0.5P(c∩d)=0.2p(c∪d)的补集=0.1whereP(c)isprobabilityofevent...
two event c and d are such that:
P(c)=0.5 P(c∩d)=0.2 p(c∪d)的补集=0.1
where P(c)is probability of event c occurring.
Determine(a)p(c∪d) (b)p(d) 展开
P(c)=0.5 P(c∩d)=0.2 p(c∪d)的补集=0.1
where P(c)is probability of event c occurring.
Determine(a)p(c∪d) (b)p(d) 展开
1个回答
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(a)p(c∪d)=1- p(c∪d)的补集=1-0.1=0.9
(b)由p(c∪d)=p(c)+p(d)-P(c∩d)知,
p(d)=p(c∪d)+P(c∩d)-p(c)=0.9+0.2-0.5=0.6
(b)由p(c∪d)=p(c)+p(d)-P(c∩d)知,
p(d)=p(c∪d)+P(c∩d)-p(c)=0.9+0.2-0.5=0.6
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