00:01
Alright, so here the question is to compute the value of t for the t distribution for all the given conditions.
00:09
Right in the first, it's for the area in the right tail.
00:13
That is here, alpha is 0 .05, the degrees of freedom is 12.
00:18
So the critical value, it will correspond to the value of t alpha for the given degrees of freedom.
00:23
This is t .05 for the degrees of freedom 12.
00:28
And this is equal to 1 .782.
00:33
Right.
00:34
Next is area in the left tail for alpha.
00:38
0 .025 sample size 66.
00:45
So here the degrees of freedom is 66 minus 1, that is 65.
00:52
And the critical value here, it corresponds to the value of t alpha for the given degrees of freedom...