00:01
Hi, i'm david and i'm here to have jansson 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.
00:12
The formula will be the xbos plus or minus the tm minus 1 degree freedom and 4 over 2 times with the s over square of n.
00:22
In this question here we are given the symbol n, it will equal to the 12.
00:27
We are given the x bar, equal to the 11 .3, and the sigma square, the s square, equal to the 781.
00:40
Now want to find the 99 % confidence interval.
00:44
Okay, the formula, we are given the x bar, the s, and the n.
00:47
So we will need to find the critical value t m minus 1 degree of freedom and 4 over 2.
00:53
Now n equal to the 12 minus 1 will be 11 degree freedom...