I need some help understanding sampling distributions. Here's the Q:(adsbygoogle = window.adsbygoogle || []).push({});

Prepare the sampling distribution x-bar of a random sample of n=2 drawn without replacement from a finite population of size n=5, whose elements are the numbers 3,5,7,9,11. Is the mean (mu x-bar) and unbiased estimator of mu?

So far I figured E(x-bar)=7. But I'm not sure how to determine the rest? Is there a formula I need for unbiased estimators?

I know there aren't too many taking AP stat out here, so ANY help would be great!!

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: AP Statistics help?

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

**Physics Forums | Science Articles, Homework Help, Discussion**