00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
In this question we'll recall about the distribution of the sum of mean x bar.
00:08
X power will follow by the normal distribution where the mean of the x bar equal to the mean of the x and then the standard division of the x bar equal to the standard division of the x of the scalyptor end.
00:23
Now in this question we are given the x followed by the normal with the mean x equal to the 227 .4 and the standard division of the x equal to the 61 .4.
00:42
And here we are given the n equal to the 247.
00:46
And the question asks if you love the missing value inside the box.
00:51
Here we have the bellsaf here and the middle one will be the mean.
00:58
So we have here the mean of the x bar.
01:01
First to find the mean of the x bar and we have applied the formula here.
01:05
We see that the mean of the x bar equals to the mean of the x and therefore equal to the 227 .4.
01:13
So the value we have to fill up here will be 227 .4...