00:01
Hi, i'm david and i'm here to help you answer your question.
00:04
Now let me bring up your question here.
00:07
In this question we discuss about the critical value for one mean z test.
00:13
Let me remind you what does mean by the one mean and the two means test.
00:21
So normally when we have the ad node, normally will be the m equal to some value m0 and the add 1 will be mule.
00:31
It can be the case that m is not equal to the m0, there will be called the two -sided.
00:39
And then in the two -sided, we need to use unfa over two.
00:44
Otherwise, if we have the u -nodd -n, u -ek -1, when we have the mule greater than some m -0, or sometimes we have the mule smaller than the m -0 -0, there will be called the 2 -1 -sided.
01:01
And for the 1 -sided, we only use unfar only...