So we've been estimating the true standard deviation of the population with our sample standard deviation.

所以我们一直在用我们的样本标准差来估计总体的真实标准差。

Remember, our best estimate of this is the true standard, or it is the true standard deviation of the population divided by 10.

请记住，我们对此的最佳估计是真实标准，或者它是人口的真实标准差除以 10。

We don't know the true mean of the sampling distribution, and we also don't know the true standard deviation of the sampling distribution.

我们不知道抽样分布的真实均值，也不知道抽样分布的真实标准差。

And then we say OK, we never know the true standard, or we seldom know-- sometimes you do know-- we seldom know the true standard deviation.

然后我们说好吧，我们永远不知道真正的标准，或者我们很少知道——有时你确实知道——我们很少知道真正的标准偏差。