00:01
Hi, i'm david and i'm here to help the answer your question.
00:04
Now let me bring up your question here.
00:07
In this question here, we want to discuss about the standard normal distribution.
00:11
And to do this question, i'm going to bring up the z table.
00:15
And from here i will show you how to use the z table.
00:19
Now let me put the table on the right here.
00:24
In this question here, want to find the z scores, so we have the s standfalls, we have more than 1, that will separate the middle 13 % of the distribution from the area in the tails.
00:37
It means when we draw the graph on the standard normal, it will have the bell curve, and then we will have the middle one will be the zero will be the mean.
00:48
Now we will have to find the z on the left and the z on the right, such that the middle area here, it will equal to the 13 % only.
01:00
So this one will be the 13%.
01:07
So therefore the two tails the one on the left and the one on the right.
01:12
All together, that will be equal to the 100 % minus 13%.
01:19
And will equal to the 87%...