SOLUTION: Let "x bar" be the sample mean for a random sample of 12 observations from a uniform (0,1). What is the mean and variance of "x bar"?

Algebra ->  Probability-and-statistics -> SOLUTION: Let "x bar" be the sample mean for a random sample of 12 observations from a uniform (0,1). What is the mean and variance of "x bar"?      Log On


   

Question 440589: Let "x bar" be the sample mean for a random sample of 12 observations from a uniform (0,1). What is the mean and variance of "x bar"?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!

==> is the mean of sample means of size 12.

==> Var%28X%29+=+E%28X%5E2%29+-+mu%5E2+=+1%2F3+-+1%2F4+=+1%2F12
==> ,assuming i.i.d.