设总体X服从正态分布 [img=109x27]1803380cad79e80.png[/img] ,其中[img=11x18]1803380cb5ecdbe.png[/img]未知,[img=18x22]1803380cbeb8f1e.png[/img]已知,[img=114x23]1803380cc78989b.png[/img]为样本,[img=99x60]1803380cd0cba0e.png[/img],则[img=11x18]1803380cb5ecdbe.png[/img]的置信水平为0.95的置信区间是
A: [img=216x43]1803380ce2c1c39.png[/img]
B: [img=216x43]1803380cedadab3.png[/img]
C: [img=229x43]1803380cf8a2e1b.png[/img]
D: [img=231x43]1803380d03ba95c.png[/img]
A: [img=216x43]1803380ce2c1c39.png[/img]
B: [img=216x43]1803380cedadab3.png[/img]
C: [img=229x43]1803380cf8a2e1b.png[/img]
D: [img=231x43]1803380d03ba95c.png[/img]
举一反三
- 设总体X服从正态分布 [img=109x27]1803380cad79e80.png[/img] ,其中[img=11x18]1803380cb5ecdbe.png[/img]未知,[img=18x22]1803380cbeb8f1e.png[/img]已知,[img=114x23]1803380cc78989b.png[/img]为样本,[img=99x60]1803380cd0cba0e.png[/img],则[img=11x18]1803380cb5ecdbe.png[/img]的置信水平为0.95的置信区间是 未知类型:{'options': ['', '', '', ''], 'type': 102}
- 设总体X服从正态分布 [img=109x27]1803573a0076699.png[/img] ,其中[img=11x18]1803573a08d2328.png[/img]未知,[img=18x22]1803573a110da8d.png[/img]已知,[img=114x23]1803573a195e65e.png[/img]为样本,[img=99x60]1803573a2158504.png[/img],则[img=11x18]1803573a08d2328.png[/img]的置信水平为0.95的置信区间是 A: [img=216x43]1803573a3254c00.png[/img] B: [img=216x43]1803573a3d0ced9.png[/img] C: [img=229x43]1803573a489533b.png[/img] D: [img=231x43]1803573a525c9b6.png[/img]
- 设总体X服从正态分布 [img=109x27]1803da22a21d0a8.png[/img] ,其中[img=11x18]1803da22ab3a646.png[/img]未知,[img=18x22]1803da22b3d84a5.png[/img]已知,[img=114x23]1803da22bc5330b.png[/img]为样本,[img=99x60]1803da22c57f2f4.png[/img],则[img=11x18]1803da22ab3a646.png[/img]的置信水平为0.95的置信区间是 A: [img=216x43]1803da22db44778.png[/img] B: [img=216x43]1803da22e68fbcb.png[/img] C: [img=229x43]1803da22f1ce6f5.png[/img] D: [img=231x43]1803da22fdbac7e.png[/img]
- 设总体X服从正态分布 [img=109x27]1803da26c2d171a.png[/img] ,其中[img=11x18]1803da26cc86700.png[/img]未知,[img=18x22]1803da26d59d20b.png[/img]已知,[img=114x23]1803da26de5dd16.png[/img]为样本,[img=99x60]1803da26e6fc68f.png[/img],则[img=11x18]1803da26cc86700.png[/img]的置信水平为0.95的置信区间是 A: [img=216x43]1803da26fae58ae.png[/img] B: [img=216x43]1803da2705a0873.png[/img] C: [img=229x43]1803da27111e48e.png[/img] D: [img=231x43]1803da271c1d4f3.png[/img]
- 设总体X服从正态分布 [img=109x27]1803da24edd8da7.png[/img],其中[img=11x18]1803da24f6dffd9.png[/img]未知,[img=18x22]1803da24ff8a925.png[/img]已知,[img=114x23]1803da2508525ac.png[/img]为样本,[img=99x60]1803da2510aa355.png[/img],则[img=11x18]1803da24f6dffd9.png[/img]的置信水平为0.95的置信区间是 A: [img=216x43]1803da25240b968.png[/img] B: [img=216x43]1803da252fbb61f.png[/img] C: [img=231x43]1803da253bc1c83.png[/img] D: [img=231x43]1803da254778c45.png[/img]