00:01
Hey there, welcome to numerade.
00:03
So we have a study on elderly people who own dogs.
00:07
They were less likely to visit their doctors at the office.
00:12
So we have this hypothetical data here with a sample of control group and with elders with dogs.
00:21
So it's just a significant difference in the number of doctors visits between these two groups.
00:27
So we are going to perform two -tailed tests for us.
00:30
Hypothesis so let's write a null and alternative hypothesis here h -null and h -a so our h -nol we're trying to see if the differences are equal to zero okay so the difference will equal to zero because if they do equal to zero that means they don't the means do not differ from each other and on the contrary our return of hypothesis is where the mean difference does not equal to zero.
01:07
That means they differ.
01:10
All right so let's see here.
01:12
So we're going to perform a pair of t test since we have a control group and one with dog owners.
01:17
So we just have to find our n over here.
01:19
So our sample size would be six since we have six pair of data.
01:24
Okay and then use our calculator to find a t score, plug in them, plug it in and any differences...