00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Let me bring up your question here.
00:06
Now in this question we discuss about the normal distribution where we have...
00:16
Sorry, let me bring in here for you.
00:18
And here, if we have the x followed by the normal distribution with the mean and the mill, then if we turn the x minus the mean divided by the standard deviation, it will equal to the standard normal.
00:34
Now look at the question we see that we have the x followed by the normal.
00:39
So x stands for the height and here x is followed by the normal where the mean equal to the 172 and the standard division equal to the 6.
00:55
And now we want to select a random symbol and equal to 36 and then we want to find the probability of the average height means then the x bar.
01:09
It will be at least 174.
01:14
Now when we talk about the symbol mean, we have another formula for the symbol mean...