若X~N(3,4),且P(X>C)=P(X
举一反三
- 若\(X\)的分布律为:\(P\{X=k\}=p(1-p)^{k-1},k=1,2,3,\ldots\),则以下选项正确的有: A: \(P\{X\gt m+n|X>m\}=P\{X\gt n\}\) B: \(X\sim b(n,p)\) C: \(P\{X\gt n\}=(1-p)^{n-1}\) D: \(P\{X\gt n\}=(1-p)^n\)
- 设X~N(3,4),且P(X>a)=P(X<=a),则 a=
- X~N(3,4),则P(X>3)=
- 设X~N(3,4),若P(X<c)=P(X≥c),则c等于()?
- 若X~B(n,p),且E(X)=3,D(X)=1.2,则n=_______,p=_____________