00:01
So i can help you out with the first part of this question.
00:02
The second part, you actually didn't give enough information to find the answer for this unless you mean that the alpha error is .1 or that probability of the, you say beta is 1, maybe you mean the other.
00:18
But we have this data.
00:20
It's a two -sample z -test.
00:22
I'm going to assume that the two means are equal, meaning that the difference is zero.
00:27
And alternately, i'm going to say it's a negative difference.
00:30
And the alpha level, again, i don't know.
00:34
And we have our test statistic is a z value.
00:38
And it comes out to be extremely negative.
00:43
Therefore, we would have strong evidence to reject the null and say that there is definitely evidence that the first mean is less than the second mean.
00:53
So it has a lower heat output, i think it was.
00:57
And that there's a significant difference...