00:01
For this problem, the first thing that we'll need to do is find our critical t value.
00:06
To do that, we'll note that it should be a t -statistic with n -1 degrees of freedom, so that's 33 degrees of freedom.
00:13
And since this is a one -tailed test, we want the t -statistic to have a one -tailed proportion equal to alpha, 0 .05.
00:21
So i have a table of values up here, and i have quickly realized i don't actually have the right number of degrees of freedom on my table.
00:29
So i'm just going to use my software, wolfram mathematica, here to do this.
00:33
Though, of course, if you have a table of values that does have the appropriate number of degrees of freedom, you can go ahead and use that.
00:40
So i'm just putting in inverse cdf, student t distribution, 33 degrees of freedom, and we want 0 .05 in the left tail, so make sure that you put in a negative value when we're talking about t -star here...