Find the mean and variance of the mean of a random sample of 9 from a distribution having pdf 6x(1-x) 0 < x < 1, zero elsewhere.

I don't even know how to start this one.

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- November 18th 2008, 12:19 AMwolverine21Finding mean and variance from the mean?
Find the mean and variance of the mean of a random sample of 9 from a distribution having pdf 6x(1-x) 0 < x < 1, zero elsewhere.

I don't even know how to start this one. - November 18th 2008, 03:56 AMmr fantastic