00:01
Hey there, welcome to numerate.
00:03
So we were given a test stats problem over here, where we have our proportion 1 is less than a proportion 2.
00:13
So with this, we are asked to find a z stat over here with the given statistics.
00:24
So let's plug in what we have here.
00:26
So basically for our proportion, we're going to basically do p1 equals.
00:32
We can just keep it as a fraction 111 our xx divided by our sample size and for p2 we have 690 for our n 195 for our x divided by 690 so we just keep it as it is and for p p and q is basically the p is a proportion pool so what we have is basically 121 plus 195 divided by total of 550 plus 690.
01:15
So let's actually calculate this right now and see what we have here.
01:21
121 plus 195 and we get 316 divided by 550 plus 690.
01:35
And we get 1 ,240.
01:38
And q will be basically 1 minus p, so it will be 1 minus this fraction.
01:43
Right here, 316 divided by 1 ,240.
01:49
And we get, what do we get here? 1 ,240 minus 316.
01:57
We get 924 divided by 1 ,240...