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1·What is the 95% confidence interval for the population mean?

什么是95%的人口置信区间是什么意思？

2·The calculation formulas of sample size based on the error limitation are given for estimation of population mean.

对于样本均值估计总体均值，给出了基于误差限制的样本容量的计算式。

3·We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.

我们有几种不同的方式去定义这个概念，取决于我们指的是，样本均值还是总体均值。

4·This paper deals with the incomplete sample estimation of finite population mean in existing of nonrespondent sampling units.

本文讨论了存在不回答样本单位时，有限总体均值的缺损样本估计。

5·The population mean is often written x-bar. If you have a sample with n observations, it's the summation i = 1 to n of xi/n--that's the average.

人口均值经常写成“x-条形柱”，如果你有一个样本有n个观测者，是从 i=1到n和的xi/n，这是平均值。

6·The paper proposes new separate ratio estimators for population mean using known skewness coefficient of auxiliary variable in stratified random sampling.

本文在分层随机抽样下通过使用辅助变量的偏斜系数提出了几个总体均值的估计。

7·This paper deals with the estimation of population mean in systematic sampling by use of auxiliary information in order to improve the accuracy of the estimate.

讨论了等距抽样中，如何利用辅助信息改进总体平均值的估计，以达到提高估计精度之目的。

8·We give the approximation formulas of the variance of the sample ratio estimator for a population mean and its asymptotically non-biased estimator in multi-stage sampling.

讨论多阶段抽样比率估计及其样本量选择的问题，给出了比率估计抽样均方误差的近似公式及其渐近无偏估计的公式。

9·I mean, as the population grows and there are more vehicles on the roads and there's more machinery, surely they can't depend so much on sugar cane?

我是说，随着人口增长，路上车辆更多了，机械也更多了，他们肯定不能只依赖于甘蔗（作为生物燃料）吧？

10·I mean take the question of East Asia: Japan, Korea, China, etc. a third of the world's population lives there, now the largest economic region in the world.

我们来谈谈东亚的问题。东亚：日本，韩国，中国等等——世界上三分之一人口住在那边，现在是全球最大的经济区域。