00:01
Hi, i'm david and i'm here to have you answering your question.
00:03
Now let me bring up your question here.
00:06
In the question here, we are going to discuss about the confidence interval for the mean.
00:11
Let me remind you that the confidence interval for the mu, it will be the xbos plus and minus the merging of the error, where the merging of the error equal to the t and 4 over 2, and minus 1 degree freedom.
00:25
Then with the s divan be squared to the n.
00:29
And we have the margin of the error also equal to the width of the comfort interval divided by 2 as well.
00:39
Now in this question here we're given the n equal to the 25 and we're given the x bar equal to the 22 and we have the s equal to the 4.
00:51
We want to find the 99 % confidence interval from the mean.
00:55
Look at the formula we have the x bar, the end...