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[单选题]
下列各式中不成立的是?()
A.(A∩B)×(C∩D)=(A×C)∩(B×D)
B.(A∪B)×(C∪D)=(A×C)∪(B×D)
C.A×(B∪C)=(A×B)∪(A×C)
D.(A∩B)×C=(A×C)∩(B×C)
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A.(A∩B)×(C∩D)=(A×C)∩(B×D)
B.(A∪B)×(C∪D)=(A×C)∪(B×D)
C.A×(B∪C)=(A×B)∪(A×C)
D.(A∩B)×C=(A×C)∩(B×C)
A.2》5
B.3》=3
C.1!=1
D.6==5
对来自正态总体X~N(μ,σ2),(μ)的一个样本X1,X2,X3
,则下列各式中()不是统计量。
A.∃x∃y∀z(P(x,y)∨¬Q(z)∨R(x))
B.∃x∃y∃z(P(x,y)∨¬Q(z)∨R(x))
C.∃x∃y∀z(P(x)∨¬Q(z)∨R(x))
D.∃x∃y∀z(P(x,y)∨Q(z)∨R(x))