interval estimation of conditional means : 条件平均数的区间估计 difference between two means : 两个均值之差 estimates of difference of means : 均值差的估计 ..
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But that is by no means the only difference between the two economies.
但是这决不是两个经济体之间的唯一不同之处。
That means the difference between the two is only one-third % of a millionth of a percent.
意味着,二者之间的差别仅是,百万分之三分之一。
This tool is used to test the null hypothesis that there is no difference between two population means against either one-sided or two-sided alternative hypotheses.
此工具用于检验两个总体平均值之间不存在差异的空值假设,而不是单方或双方的其他假设。
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