Due to the bad weather, cotton yield poer mu is very low this year.

气不好，今年棉花的亩产量很低。

" mu" " k" times " Fn" and the " mu" " k"

" mu" " k" 乘以 " Fn" 并且 " mu" " k" 将是 0.

We learned the population mean was that mu letter.

了解到，总均值用希腊字母μ表示。

The force of friction is always mu K FN.

摩擦力始终为 mu K FN。

One mu equals roughly 0.067 hectares.

一亩约等 0. 067 公顷。

And actually, we could have just left the mu squared there.

实际上，本可以将 mu 平方留在那里。

So pi mu is what we're working on.

所以π是正在研究的东西。

If this was a whole population of numbers, we've figured out that this was mu.

如果这是一组完整的数值总，已经确定这就是总均值μ。

So minus mu K so the force of friction--- I'll just put force of friction.

所以减去 mu K 所以摩擦力 --- 只输入摩擦力。

Times mu squared times the sum from i equals 1 to n.

乘以 mu 的平方乘以 i 等 1 到 n 的总和。

And let's see, minus 2 times mu-- sorry, that mu doesn't look good.

让看看，减去 2 乘以 mu-- 抱歉，mu 看起来不太好。

So this is the Greek letter mu, and we put this k here for kinetic, or we can kind of say moving friction.

k表示" 动" (kinetic)该系数等摩擦力的大小。

So the mu squared term just gets factorized out.

所以 mu 平方的项刚好被分解了。

So mu sub P2 with a bar over it.

因此，P2的样本比例的抽样分布的均值，记作带横线的mu sub P2。

So this is also, we just have to remember that mu is equal to p.

因此，只需记住，μ等p。

I'm interested in understanding this as a function of mu.

有兴趣将其理解为 mu 的函数。

Similarly, the expected value for  our sum of size 3 is 3 times mu and so on and so forth.

同样，大小 3 的总和的预期值为 mu 的 3 倍，依此类推。

I've got a mu squared term in here, and I've got two things that go in there.

这里有一个 mu 平方项，有两样东西。

So this is going to be equal to mu, which is going to be equal to p.

因此，这等μ，也就是等p。

Fx bar given mu and sigma squared.

Fx bar 给定 mu 和 sigma 平方。