00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Now let me bring up your question here.
00:06
Here we want to find the high -pudist testing that the noon hypothesis mu equal to the 28 versus the alternative hypothesis mu will not equal to the 28.
00:17
Notice that this will be the 2 -tel test.
00:22
And we're given that the x -par equal to the 27, there will be the sigma equal to the 5 and equal to the 36.
00:29
Then the first thing we need to do is we need to the test statistics denoted by the z of the x bar, which is this one.
00:37
That will call this one will be a.
00:40
And by the formula equal to the x bar, we minus the mu of the sigma divanb square of n.
00:48
So if we turn the x bar equal to the 27 .5, minus the mu will be the 28 here, over the sigma will be the 5 divided square root of the 36...