00:01
Hi, i'm david and i'm here to have you and answer your question.
00:04
Now let me pick up your question here.
00:06
In the question here, we are going to discuss about the competence interval for the mean.
00:11
Let me remind you that the confidence interval for the mule, it will be the x -par plus or minus the critical value t -star, the thangmun base code into the n.
00:23
Here we have the sample size n equal to the 42, the x -par equal to the 3 .6, and the s equals to the 16 .7.
00:32
So the first step we need to find the 99 % competent interval.
00:38
Look at the formula we have given the x -par, the s, and the n.
00:41
The only quantity we need to find will be the t -star.
00:45
The t -stars just equal to the t when the n minus 1 degree freedom.
00:48
And 4 over 2.
00:50
Now n equals to the 42, minus 1 will be the 41 degree freedom, and the 99 % confidence, and 5 equals to 1%, the value 2 equals to the 1 % which is equal to the 050...