00:01
So we want to find out if the vault final, which apparently occurs after the individual event, and these are all the same person, we want to see if they actually increase their score.
00:14
I put in my data, and i believe there are 42 that have participated, and i found that they are the same person, so this will be a matched pair, matched pair or paired data, matched pair.
00:30
Since each pair of data is not independent, they're from each from the same person participating the same year, and here's the information we have.
00:40
So for the mean and the standard deviation, you can double check me.
00:44
Now we want to find a 90 % confidence interval for that mean difference, and we need to find, to construct it with a t interval, using a t distribution, and we need to take that mean, 1 .92 plus or minus, and we need to have a t value with 0 .05 in the upper tail and 41 degrees of freedom...