00:01
Hi, i'm david and i'm here to hamion's in your question.
00:03
Now let me bring up your question.
00:05
In the question, we need to find the hybrid testing and we want to test the evidence to support the claim that the proportion of the newly wet in the annexity a who have disposed of a different race of anicity from their own is less than the proportion of the newly wet in the entity b.
00:28
So we if we call the in the nsta as the proportion 1 and b will be the proportion 2 and we will have the proportion 1 and 1 1 tells us the proportion 2 and we have the known hypothesis that the b1 equals to the p2 versus the alternative hypothesis the b1 once you have it less than so we be smaller than the the p2.
00:59
So this will be the answer for the first part where we have to choose the lunan alternative hypothesis.
01:05
And this one here will correspond to the one we have here, maybe less than.
01:13
So we can change this one into more specifically, it will be quite equal.
01:19
And this one will correspond to the answer c.
01:25
And that's to be the first part.
01:27
Now the second one, we need to find the test statistics.
01:30
Here we will we have the sample 1000 in each sample and 1 equals 1 ,000 and the x1 it will equal to 2.
01:39
We are given the phot 1.
01:43
It will be in the set a 13%.
01:48
It will be the 0 .1 3.
01:50
And we have the n2 equal to 1000 as well.
01:54
And we have the ph2 equal to the 012 % 20%.
02:00
So the first step we need to find will be the test statistics.
02:04
The formula will be the z equal to the p hod1 minus the p h2 over the square root of the p ht1 times one minus p ht1 over the n1 plus p h2 times one minus the p hdh2 over the n2...