00:02
So, alden is dating mane, and knows her birthday is this month.
00:05
He's going to make a guess.
00:08
Okay, so the null hypothesis would be, today is not her birthday.
00:14
It's kind of the default state.
00:18
It usually represents no change or no difference.
00:22
The alternative hypothesis would be, it is her birthday today.
00:30
Now if we have a look at what might happen, first of all the null hypothesis could be true, it's not her birthday today, or false, it is her birthday today.
00:40
And there are two things we might do to this null hypothesis.
00:43
We may reject it, or we may fail to reject it.
00:50
Now if the null hypothesis is true, it's not her birthday, and we don't reject it, so we're not saying it is her birthday, good, that's what we would hope.
00:59
If the null hypothesis is false, it's her birthday, and we notice that, we reject it and say it's not not her birthday, so it is her birthday, that's also good...