设A,B 为随机事件，P(B) > 0，P(A|B) = 1，则必有( ).
A: [img=136x25]1802f2a4b41dca2.png[/img]
B: [img=52x20]1802f2a4bb8a70d.png[/img]
C: P(A) = P(B)
D: [img=116x25]1802f2a4c44b7ae.png[/img]
A: [img=136x25]1802f2a4b41dca2.png[/img]
B: [img=52x20]1802f2a4bb8a70d.png[/img]
C: P(A) = P(B)
D: [img=116x25]1802f2a4c44b7ae.png[/img]
举一反三
- 设随机变量X~N(-2,4), 其密度函数为f(x)，分布函数为F(x). 则以下选项正确的有 A: X/2~N(-1,1) B: 2X+4~N(0,16) C: P(X<0)=P(X>-4) D: [img=221x25]18032ce85042ef8.png[/img] E: [img=275x47]18032ce85c098ed.png[/img] F: (X+2)/2~N(0, 2) G: (X-2)/2~N(2, 1) H: P(X>2)=P(X<2) I: P(X>2)+P(X<-2)=1 J: [img=277x47]18032ce867a7895.png[/img] K: [img=247x43]18032ce87245061.png[/img] L: [img=255x43]18032ce87cde027.png[/img]
- 设A, B 为随机事件，P(B) > 0，P(A | B) = 1，则必有( ). A: [img=136x25]1802fe226ec81c1.png[/img] B: [img=52x20]1802fe2276baa4e.png[/img] C: P(A) = P(B) D: [img=116x25]1802fe227eec80c.png[/img]
- 设A, B 为随机事件，P(B) > 0，P(A | B) = 1，则必有( ). A: [img=136x25]180339487751476.png[/img] B: [img=52x20]1803394880b98c6.png[/img] C: P(A) = P(B) D: [img=116x25]1803394888c93bf.png[/img]
- 设A, B 为随机事件，P(B) > 0，P(A | B) = 1，则必有( ). A: [img=136x25]1802f281951a1e0.png[/img] B: [img=52x20]1802f2819e33d7d.png[/img] C: P(A) = P(B) D: [img=116x25]1802f281a72c71b.png[/img]
- 设A,B 为随机事件，P(B) > 0，P(A|B) = 1，则必有( ). A: [img=136x25]18031e8fbb1f729.png[/img] B: [img=52x20]18031e8fc32a01d.png[/img] C: P(A) = P(B) D: [img=116x25]18031e8fcad1a58.png[/img]