已知[img=50x29]18030bf27062ea2.png[/img]，则[img=33x26]18030bf278f7d93.png[/img]
A: [img=162x44]18030bf2876b807.png[/img]
B: [img=55x25]18030bf290a6ba0.png[/img]
C: [img=162x44]18030bf29e027bf.png[/img]
D: [img=162x44]18030bf2ac5413e.png[/img]
E: [img=134x44]18030bf2b4a4387.png[/img]
A: [img=162x44]18030bf2876b807.png[/img]
B: [img=55x25]18030bf290a6ba0.png[/img]
C: [img=162x44]18030bf29e027bf.png[/img]
D: [img=162x44]18030bf2ac5413e.png[/img]
E: [img=134x44]18030bf2b4a4387.png[/img]
举一反三
- 已知[img=50x29]1802ce15d5a3a9d.png[/img]，则[img=33x26]1802ce15de2155a.png[/img] A: [img=162x44]1802ce15eb86e26.png[/img] B: [img=55x25]1802ce15f33a862.png[/img] C: [img=162x44]1802ce15fb9fb10.png[/img] D: [img=162x44]1802ce1607c9df4.png[/img] E: [img=134x44]1802ce161086c24.png[/img]
- 已知[img=50x29]18030bcdb7d4e7a.png[/img]，则[img=33x26]18030bcdbff68bf.png[/img] A: [img=162x44]18030bcdcdfff7c.png[/img] B: [img=55x25]18030bcdd58afa5.png[/img] C: [img=162x44]18030bcdde2d94e.png[/img] D: [img=162x44]18030bcde71c5df.png[/img] E: [img=134x44]18030bcdf03d920.png[/img]
- ${\rm var}(X)=\,$ ${\bf E}[X]=\,$ ${\bf P}(X=3)=\,$ ${\bf P}(X=-2)=\,$ ${\bf P}(X=1)=\,$ ${\bf P}(X=0)=\,$______
- ${\bf P}(X=4)=\,$ ${\bf P}(X=3)=\,$ ${\bf P}(X=2)=\,$ ${\bf P}(X=1)=\,$______
- ${\bf P}(X=-2)=\,$ ${\bf P}(X=1)=\,$ ${\bf P}(X=0)=\,$______