设P(A)=0.4,P(B)=0.3,A,B互斥,则P( AUB)= P(AB)=

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设P(A)=0.4,P(B)=0.3,A,B互斥,则P( AUB)= P(AB)=

设P(A)=0.4,P(B)=0.3,A,B互斥,则P( AUB)= P(AB)=
设P(A)=0.4,P(B)=0.3,A,B互斥,则P( AUB)= P(AB)=

设P(A)=0.4,P(B)=0.3,A,B互斥,则P( AUB)= P(AB)=
P(A∪B)=P(A)+P(B)-P(AB)=P(A)+P(B)-0=0.7
P(AB)=0(因为互斥)

0.7 0

P(A∪B)=P(A)+P(B)-P(AB)=0.4+0.3-0=0.7
P(AB)=0(因为A、B互斥)