00:01
Here we are asked what t score would result in a one -tailed t value of 5 % for 35 degrees of freedom.
00:10
So if this is our t distribution for t has 35 degrees of freedom, there exists some t score such that the area in one tail above it is 5%, or 0 .05.
00:31
Now since the total area underneath the density curve is 1, this means that the area under the curve to the left of t must be 1 minus 0 .05, or 0 .95.
00:56
And so we're looking to solve this mathematical problem.
01:08
And we can do this using software such as excel.
01:13
So if we go to excel, you start a computation with equals.
01:18
Now the function we want to use here is the t .inv function.
01:22
That's the inverse t distribution function.
01:26
So we return this one.
01:29
And we enter our cumulative probability associated with the t value we're looking for, so that's .95.
01:36
And then the degrees of freedom is n minus, is 35, it's given in the question as 35...