00:02
So we have that our n is equal to 20, and we have that our probability is equal to 0 .7, and we're finding the probabilities of all of these exact values.
00:12
So what i'm actually going to do, i'm not going to do it by hand because that would be incredibly tedious.
00:16
I'm going to go to this probability calculator.
00:19
Look, i've just googled binomial probability calculator.
00:22
And i'm going to go to this second one that the university of iowa does.
00:25
There is amazing.
00:26
I really enjoy it.
00:27
So this is 20 for n.
00:29
Our probability is 0 .70, and then our x is going to be all kinds of different things.
00:35
So the first one that it wants is f of 12.
00:38
So we're going to type in for x, we're going to type in 12.
00:42
And look at it gives us, isn't that amazing? it just gives it to us.
00:44
And look how it highlights, too, all these different answers.
00:49
So it highlights 12 .1 .144.
00:51
We don't even have to round it.
00:53
So for the 1 for 12, f of 12, i think is how it was notated.
00:58
It was point one one i have forgotten it 4 .1 .144.
01:04
So let's look at the next one...