2. What is the sample size, n, for a 95% confidence interval on
the mean, if we know that the process’ standard error is 3.2 units,
and we want to allow at most 1.0 units for our error?
3. Let’s say that you just randomly pulled 32 widgets from your
production line and you determined that you need a sample size of
46 widgets, However, you get delayed in being able to pull another
bunch of widgets from the line...