00:01
We're looking at a brewery where they have a machine that's filling up bottles of beer.
00:06
And we know that the mean fill for each bottle of beer is 12 .28 ounces with a standard deviation of 400s of an ounce.
00:22
And the company wants to reduce the amount of extra beer that's being poured into these bottles.
00:27
So they want to find the highest 1 .5 % and the highest 1 .5 % of these fills.
00:40
When we're looking for, that means that it's, if we looked at this, like visually on our graph, it's a very, very small percent.
00:51
It's like something right up in here, like all this.
00:54
It would be that 1 .5%.
00:58
But that also means that there's all the rest of this.
01:02
Information, like everything over here, we're basically taking out this is the 98 .5 % that makes up the rest of it.
01:11
Now, the reason that that's important is because you can find this amount really easily by looking at a z table.
01:16
And if you go to a z table and you look for where the amount is 0 .9850, that's the 98 .5 % that's covered to the left.
01:31
Well, you can use really easily find what the z value is...