抽取一个容量为100的随机样本,其均值为[img=53x18]1802e3f53ebf8e0.png[/img],标准差s=12.总体均值的95%的置信区间为()
A: [img=72x20]1802e3f546d4fa2.png[/img]
B: [img=72x20]1802e3f54efd1f5.png[/img]
C: [img=72x20]1802e3f5569ebf7.png[/img]
D: [img=72x20]1802e3f55e63664.png[/img]
A: [img=72x20]1802e3f546d4fa2.png[/img]
B: [img=72x20]1802e3f54efd1f5.png[/img]
C: [img=72x20]1802e3f5569ebf7.png[/img]
D: [img=72x20]1802e3f55e63664.png[/img]
举一反三
- 抽取一个容量为100的随机样本,其均值为[img=53x18]1803035a0e29091.png[/img],标准差s=12.总体均值的95%的置信区间为() A: [img=72x20]1803035a1647446.png[/img] B: [img=72x20]1803035a1ef7978.png[/img] C: [img=72x20]1803035a278f215.png[/img] D: [img=72x20]1803035a302d201.png[/img]
- 抽取一个容量为100的随机样本,其均值为[img=53x18]1803a6c0481a35b.png[/img],标准差s=12.总体均值的95%的置信区间为() A: [img=72x20]1803a6c052e9128.png[/img] B: [img=72x20]1803a6c05b39ad1.png[/img] C: [img=72x20]1803a6c062b1766.png[/img] D: [img=72x20]1803a6c06b862c1.png[/img]
- 抽取一个容量为100的随机样本,其均值为[img=53x18]1803946abcfcc91.png[/img],标准差s=12.总体均值的95%的置信区间为() A: [img=72x20]1803946ac471926.png[/img] B: [img=72x20]1803946acd2a3ef.png[/img] C: [img=72x20]1803946ad5b7126.png[/img] D: [img=72x20]1803946ade0e198.png[/img]
- 抽取一个容量为100的随机样本,其均值为[img=53x18]1802e3e37ec7568.png[/img],标准差s=12.总体均值的95%的置信区间为() A: [img=72x20]1802e3e387b87e9.png[/img] B: [img=72x20]1802e3e390f0f5e.png[/img] C: [img=72x20]1802e3e39a97edd.png[/img] D: [img=72x20]1802e3e3a431d41.png[/img]
- 抽取一个容量为100的随机样本,其均值为[img=53x18]180379d024104dd.png[/img],标准差s=12.总体均值的95%的置信区间为() A: [img=72x20]180379d02cc0576.png[/img] B: [img=72x20]180379d0366595a.png[/img] C: [img=72x20]180379d03f2816c.png[/img] D: [img=72x20]180379d04715188.png[/img]