00:01
Hi, i'm david and i'm here to have yans in your question.
00:03
Now let me bring up your question here.
00:06
In the question here, we are going to discuss about the hypothesis testing about the difference between the proportion.
00:13
Here we want to test if there is sufficient evidence you conclude that the proportion 1 smaller than proportion 2.
00:16
And this will help us to identify the alternative hypothesis that the b1 will be smaller than the b2.
00:16
If there is sufficient evidence, you conclude that the proportion 1 smaller than proportion 2.
00:21
And this will help us to identify the alternative hypothesis that the b1 will be smaller than the b2.
00:31
When we have the alternative hypothesis, we can write down the null hypothesis than the b1 equal to the b2.
00:39
So therefore, in the question i asked not what type of the test should be used? this will be the test between the two population proportion from the independent symbols.
00:52
So therefore the answer must be the option c.
00:55
The hypothesis test regarding the difference between two population proportions from independent samples.
01:04
Then for the b, determine the nune and alternative hypothesis.
01:07
So this should be the d, then the b1 smaller than the b2.
01:14
And then the next one asks me to find the b value.
01:18
Before we find the b value, we need to find the test statistics.
01:21
And the test statistic will be the x bh1 minus bh2 divided by square root of the ph1 times 1 minus bhat 1 over the n1 plus bh2 times 1 minus bh2 over the n2.
01:42
And here, in it you find the bh1 and bh2, we notice that, we have the n1 equal to the 125, x1 equals to the 40.
01:54
From here we can find the phe 1 equal to x1 over n1 equal to the 40 over 125...