随机测定某小麦品种10个单株的籽粒产量(x, g),计算得平均数[img=76x18]1803de6600e4a2d.png[/img],标准差s=0.631,则以99%置信度估计该小麦品种单株籽粒产量的范围是( )。(注意:两尾临界t值[img=110x25]1803de6609162e0.png[/img],[img=110x25]1803de661236559.png[/img]) A: [4.638, 5.542] B: [4.459, 5.721] C: [4.890, 5.290] D: [4.440, 5.740]
随机测定某小麦品种10个单株的籽粒产量(x, g),计算得平均数[img=76x18]1803de6600e4a2d.png[/img],标准差s=0.631,则以99%置信度估计该小麦品种单株籽粒产量的范围是( )。(注意:两尾临界t值[img=110x25]1803de6609162e0.png[/img],[img=110x25]1803de661236559.png[/img]) A: [4.638, 5.542] B: [4.459, 5.721] C: [4.890, 5.290] D: [4.440, 5.740]
随机测定某小麦品种10个单株的籽粒产量(x, g),计算得平均数[img=76x18]18038dc770cc1fe.png[/img],标准差s=0.631,则以99%置信度估计该小麦品种单株籽粒产量的范围是( )。(注意:两尾临界t值[img=110x25]18038dc779c108d.png[/img],[img=110x25]18038dc7827c1c0.png[/img]) A: [4.638, 5.542] B: [4.459, 5.721] C: [4.890, 5.290] D: [4.440, 5.740]
随机测定某小麦品种10个单株的籽粒产量(x, g),计算得平均数[img=76x18]18038dc770cc1fe.png[/img],标准差s=0.631,则以99%置信度估计该小麦品种单株籽粒产量的范围是( )。(注意:两尾临界t值[img=110x25]18038dc779c108d.png[/img],[img=110x25]18038dc7827c1c0.png[/img]) A: [4.638, 5.542] B: [4.459, 5.721] C: [4.890, 5.290] D: [4.440, 5.740]
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