00:01
Once again, welcome to a new problem.
00:04
This time we're dealing with inferential statistics.
00:10
We're dealing with inferential statistics.
00:13
And when it comes to inferential statistics, we have hypothesis testing.
00:24
And of course, we also have confidence.
00:26
We also have confidence interval.
00:30
So we have both.
00:32
Hypothesis testing and we also have confidence intervals.
00:38
In hypothesis testing, we could have hypothesis testing for means, and we could also have hypothesis testing for proportions.
00:49
When you're running hypothesis testing, either for means or for proportions, for example, we could have the nar hypothesis, which says mu equals to mu not, and then the alternative hypothesis, which says mu is not equal to mu not.
01:10
So this is a two -tailed test.
01:15
So we're running a two -tailed test.
01:17
And then we could also have mu is greater than mu -not.
01:21
This is a right -tailed test...