已知[img=50x29]1802e5500da014d.png[/img]，则[img=28x26]1802e55015c1db3.png[/img]
A: [img=162x44]1802e55022c5d70.png[/img]
B: [img=55x25]1802e5502af1743.png[/img]
C: [img=162x44]1802e55037ec039.png[/img]
D: [img=162x44]1802e55044d0307.png[/img]
E: [img=134x44]1802e5504e1ffce.png[/img]
A: [img=162x44]1802e55022c5d70.png[/img]
B: [img=55x25]1802e5502af1743.png[/img]
C: [img=162x44]1802e55037ec039.png[/img]
D: [img=162x44]1802e55044d0307.png[/img]
E: [img=134x44]1802e5504e1ffce.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]
- 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]
- 已知随机变量X有分布列[img=165x51]1803c5fba95e790.png[/img]，则E(X)=1，[img=167x27]1803c5fbb14a308.png[/img]。（ ）
- 设投掷1颗骰子的点数为X,则( ) 未知类型：{'options': ['E(X)=3.5,D(X)= [img=29x21]17e43c3db9dc21b.png[/img]', ' E(X)=3.5, D(X)= [img=22x41]17e43c3dc2146ee.png[/img]', ' E(X)=3.5,D(X)=3.5', ' E(X)=3.5,D(X)=[img=22x41]17e43c3dcacf7d1.png[/img]'], 'type': 102}