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.
00:06
In the question here, we are going to discuss about the normal distribution.
00:11
Let me remind you that even the x that follows by the normal would mean a standard deviation, and then we will have the x power to be approximate to the normal.
00:21
In such a way, that divided the x bar will minus the mean of a standard deviation, divided by square the end, we obtain the standard normal.
00:28
In the question here we have the weight of main x, it will follow by the normal.
00:34
When the mean it will equal to the 183 .1, standard division equals to the 39 .5.
00:42
Now the question tells us that the end, the symbol, it will equal to the 41.
00:48
And once you find the probability that the same means x bar, it will be greater than the 163.
00:58
And to find this probability, i need to convert the xx into the z.
01:02
To do it, i need to apply this formula here.
01:05
And then i will have the 163 and minus the mean will be 183 .1 over the standard deviation, divided by square and the 41.
01:17
And then if we compute, we will have the z will be greater than 163 minus 183 .1 divided by the 39 .5 times square with the 41 equal to the minus 3 .2, 6...