00:01
Hello, friends.
00:02
We need to write here.
00:03
This is the question regarding normal distribution with mu value is given, sigma value is given, sample size is 171.
00:09
So, basically if i write here for this, what would be percentile 42? if i write here for this, this must be written as, this is the question regarding normal distribution and in the normal distribution, all the random variables are distributed amongst bell -shaped curve.
00:32
So, right -hand side area is 0 .5, left -hand side area is 0 .5.
00:36
It means that area is symmetric about y -axis and total area under normal distribution curve is 1.
00:42
So, what is percentile 42? we need to write here for this.
00:46
42 percentile means that it covers area as 0 .42.
00:53
So, we need to find particular z -score.
00:57
So, basically if i write here, z -score attribute is x minus mu x divided by sigma x...