QuestionWhen the population mean is known, then
Select one: a. We used the population mean to estimate the sample SD b. We used the sample SD to estimate the population mean c. We used the sample mean to estimate the population mean d. None of the above

Studdy Solution
The correct answer is **c.
We used the sample mean to estimate the population mean**.
But, since the problem states that the population mean is *known*, the correct answer is actually **d.
None of the above**!
We don't need to estimate what we already know!