00:01
All right, so in this question, a mattress company would like to claim that sleeping on their mattresses leads to greater productivity.
00:07
Right, so they're going to do two random samples.
00:11
So let's write this stuff down as we go.
00:13
Two random samples, and they're going to half sleep on a regular mattress and other half sleep on a special mattress.
00:22
So half on regular, half on special.
00:29
And then they will have all the employees take a task the next day and rate their performance on a scale from 1 to 100.
00:39
And the first question is, well, the question we're answering right now is basically how should we set up our hypothesis testing? what are the hypotheses? so, yeah, there's some formatting mess ups, but we're going to assume that mu sub special is the mean score, the mean performance score of the special group, the group that sleeps on the special mattress.
01:09
And kind of similarly, we'll assume mu regular is the mean, same thing, mean performance score of the regular.
01:19
So same exact thing, but exactly what you'd expect.
01:22
Right.
01:22
So then the normal situation is we want to see if these groups are different.
01:27
Specifically, we don't really want to just different.
01:31
We want to see if the special mattress leads to greater productivity.
01:35
Right...