00:01
Hello friends in this question based on the given information we need to find the value of standard error of the mean that is s e m so that is given by standard error of the mean s e that is given by s divided by root n so substituting the values s is 10 divided by root of 100.
00:30
So 10 divided by root 100 is also 10.
00:35
So 10 divided by 10 gives 1.
00:38
That means the standard error of the mean s .e that is equals to 1.
00:45
Now in the b part we need to find the we need to compute the low.
00:51
Now the 95 % of confidence interval c .i.
00:57
4 .4 .4 .5 % of confidence interval c .i.
00:58
4.
00:58
The average time to take this quiz in a minute is computed as follows.
01:03
So, ci is equals to mean plus minus t alpha divided by 2df.
01:17
So this multiplied by s divided by root of n.
01:24
Now substituting the values, we are going to find the values of ci...