00:01
Hi, i'm david and i'm here to have you answering 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 hybrid testing.
00:12
Now in this question here, want to test whether more people answer the question correctly than would be expected just due to chance.
00:24
So it means that we want to test the noon hypothesis with the proportion of answering the question correctly equal to the zero point.
00:32
Versus the alternative hypothesis that we will see more people answer correctly than so the proportion will be greater than the 0 .5 and then in this question here we will see that the symbol and equal to the 500 and we have the x equal to the 200 answer correctly.
00:59
So from here we will be able to find the sample proportion p heart.
01:03
It will equal to the x over n equal to the 200 over the 500 equal to the 0 .4.
01:12
And then the next step we will have to find the test statistics.
01:16
It will equal to the z and then the formula will be the p ht minus b over square root of the p times 1 minus b over the n and then we get equal to the the 0 .4 minus 0 .15, divided by the square root of the 0 .0.
01:36
So it would be the multiple choice with the 4 possible responses.
01:41
So therefore, the b here will be not the 0 .15.
01:45
Sorry about that.
01:46
The b here will be 1 out of 4...