0:00 one of the things that comes up is
0:02 confidence intervals and you're gonna
0:04 see that NRC two recommends that you use
0:07 some form of a confidence interval so
0:09 what is a confidence interval if you
0:11 want a 95% confidence interval you in
0:19 terms of a probability distribution
0:24 coming you're assuming a normal
0:26 distribution now right you mean and here
0:31 you're gonna have your two tails
0:37 confidence interval if it's 95%
0:39 depending on the distribution this is
0:41 normal
0:42 95% of the time the data is gonna fall
0:44 between whatever number this is and
0:48 whatever number this is that's going to
0:51 come off of what you mean is whoops and
0:53 what your standard deviation is in this
0:59 case variance
1:01 confidence interval allows you a measure
1:04 of uncertainty okay what you could do is
1:07 you can define how much probability
1:09 you're willing to take in those two
1:11 tails of that distribution at the end if
1:14 you want 95% confidence that means 0.025
1:18 or 2.5 percents going to be in each of
1:21 those tails and as you gain more
1:24 confidence like 99.9 less and less are
1:27 going to be in those two tails right
