00:01
In this question, we have a sampling distribution.
00:05
So we know the efficacy of the drug is 0 .55.
00:09
So 55 % of people get good results.
00:15
We'll put that there.
00:16
And the sample size m is 132.
00:19
We want the mean and standard deviation of the sampling distribution.
00:23
So what is the sampling distribution? what does it look like? so the sampling distribution is what happens if you take every possible sample of size 32 from this population, you give them the drug, and you see what proportion are cured.
00:41
And the average is just going to be 0 .55.
00:46
Some samples will have more people cured, some fewer, but the average will just be the same as the population.
00:51
Mean here, or population proportion, rather...