00:02
Once again, welcome to a new problem.
00:06
This time we're dealing with inferential statistics.
00:13
We're dealing with inferential statistics and we have two branches.
00:18
We have confidence interval.
00:23
We have confidence interval and we have hypothesis testing.
00:30
So we have confidence interval and then of course we have hypothesis testing.
00:36
We have confidence interval for means and we have confidence intervals for proportions.
00:45
And when it comes to confidence intervals for proportions, we do have p hat plus minus margin of error.
00:55
Remember the margin of error is z alpha over two.
01:00
Radical p 1 minus p all over n and since the margin of error is z alpha 2 radical of p 1 minus p all over n this portion right here becomes the standard error so this portion becomes the standard error so now we're looking at the problem and in this particular problem we're looking at it's customers, customers happen to the art of pharmacy and these customers are requesting, they're requesting paracetamol tablets.
01:58
So these customers are requesting parasitomal tablets and the tablets are in terms of capsules and they are also in terms of liquid liquid forms of capsules and liquid form and we want to estimate the population proportion population proportion of population proportion of sales that are in tablet form.
02:43
So sales in tablet form, the margin of error, the margin of error happens to be 0 .06 and we're running at 95 % confidence interval.
02:59
So the goal of this particular problem is determine the standard error in estimating the standard error in estimating the proportion...