在同一总体中作样本含量相等的随机抽样,有99%的样本均数在下列哪项范围内: ()
A、[img=~\/QImg\/2015-05-05-9-30-42\/image001.gif]<\/sub>±2. 58s[img=~\/QImg\/2015-05-05-9-30-42\/image002.gif]<\/sub>
B、[img=~\/QImg\/2015-05-05-9-30-42\/image001.gif]<\/sub>±1.96s[img=~\/QImg\/2015-05-05-9-30-42\/image002.gif]<\/sub>
C、μ±2.58δ[img=~\/QImg\/2015-05-05-9-30-42\/image002.gif]<\/sub>
D、μ±1.96δ[img=~\/QImg\/2015-05-05-9-30-42\/image002.gif]<\/sub>
E、y±2. 58s[img=~\/QImg\/2015-05-05-9-30-42\/image002.gif]<\/sub>
发布时间:2023-07-25 12:21:01