A 1 B 2 C 3 D 4

A (-∞，-4) B (4，+∞) C [-4，4] D (-4，4)

A 1，0，1 B 1，0，2 C 2，1，3 D 2，1，4

A <img width="153" height="47" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182804_6168.jpg" /> B <img width="154" height="47" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182806_4449.jpg" /> C <img width="157" height="47" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182806_8837.jpg" /> D <img width="157" height="47" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182808_7106.jpg" />

A 0 B 1 C 2 D 3

A <img width="122" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182809_0826.gif" /> B <img width="116" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182810_9606.gif" /> C <img width="108" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182811_3199.gif" /> D <img width="120" height="38" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182813_1950.gif" />

A P(A∪B)=P(A)+P(B) B P(AB)=P(A)P(B) C P(A<img width="20" height="35" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182813_8386.gif" title="" align="" alt="" />)=P(B<img width="20" height="35" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182815_4293.gif" title="" align="" alt="" />) D P(AB)=P(<img width="20" height="35" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182815_4293.gif" title="" align="" alt="" /><img width="20" height="35" src="https://www.beizhujiaoyu.com/uploads/202208/20210429182813_8386.gif" title="" align="" alt="" />)

A 与μ无关，而与σ²有关 B 与μ有关，而与σ²无关 C 与μ，σ²都有关 D 与μ，σ²都无关