00:01
Hi, i'm david and i'm here to help you answer the question.
00:03
Now let me bring up your question here.
00:05
In the question here, we are going to discuss about the hybrid testing.
00:09
He wants to test whether the mean time to open the door is significantly less for the dogs with owner in distress, then for dog with owner not in distress.
00:21
So i want to test the noon hypothesis that i will call the distress, it will be the mu1 equal to the mew 2 versus the alternative hypothesis than the m1 will be smaller than it will be less.
00:37
So it will be the mew 2.
00:40
And in this one we will have the dataset from the question.
00:45
So let me go back to your question and you copy the portion of your question.
00:51
And i will put the data down here.
00:54
And from the data here we will call the disjax will be the population 1 and control will be the proportion 2.
01:02
So the first step we need to find the test statistics denoted by the t.
01:08
The formula will be the x by 1 minus the x .4 2 over the square root of the s1 square over and 1 plus s2 square over and 2.
01:17
And if we're looking the value we get the 23 .43 minus 95 .89.
01:25
The value square root of 17 .77 square over 7 plus 89...