When we got this sample proportion, it was like taking a sample from this over here.

当我们拿到这个样本比例的时候，就像是从这边抽样一样。

The sample of P1 minus the sample mean, or the sample proportion, of P2.

P1 的样本减去 P2 的样本均值或样本比例。

And just to be clear, when we got this sample mean here, this sample proportion, we just sampled it.

需要说明的是， 当我们在这里得到这个样本平均值时，这个样本比例， 我们只是对其进行了抽样。

So we could figure out a sample proportion over here for the men.

所以我们可以在这里计算出男性的样本比例。

But we're going to think about the sampling distribution for the difference of this sample proportion and this sample proportion.

但是我们要考虑这个样本比例和这个样本比例之差的抽样分布。

So you could view this is a sample mean or as a sample proportion.

所以您可以将其视为样本均值或样本比例。

So just here based on our sample proportions, or our sample means, it looks like there is a difference.

所以就在这里，根据我们的样本比例，或者我们的样本均值，看起来是有区别的。

So the mean of the sampling distribution of the sample proportion.

所以样本比例的抽样分布的均值。

If you do the same thing for the women, the sample proportion is going to be 0.591.

如果你对女性做同样的事情，样本比例将是 0.591。

So let's look at the distribution of sample proportions.

那么让我们看看样本比例的分布。

And just to visualize it properly, let me draw the sampling distribution for the sample proportions.

为了正确地形象化它，让我画出样本比例的抽样分布。

Our sample proportion is equal to 0.38.

我们的样本比例等于 0.38。

So our sample proportion is 0.38, so let me write that over here.

所以我们的样本比例是 0.38，所以让我把它写在这里。

Now, this distribution over here is going to be the distribution of all of the differences of the sampling proportions, or of the sample proportions.

现在，这里的分布将是采样比例或样本比例的所有差异的分布。

So we could change this to approximately and we can use our sample proportions.

所以我们可以将其更改为近似值，然后我们可以使用我们的样本比例。

The sample proportion for the men minus the sample proportion of the women.

男性样本比例减去女性样本比例。

We sampled 1,000 men, sampled 1,000 women, and we got a sample proportion for each of them.

我们抽取了 1,000 名男性，抽取了 1,000 名女性，并为他们每个人提供了样本比例。

So you have your sample proportion, we're surveying a total of 2,000 people.

所以你有你的样本比例，我们总共调查了 2,000 人。

We got our sample proportion for the men minus-- let me do this in a neutral color.

我们得到了男性的样本比例减去——让我用中性色做这个。

Now, with that out of the way, we want to figure out the probability of getting a sample proportion that has a 0.38.

现在，抛开这个问题，我们想计算出样本比例为 0.38 的概率。