Suppose that three random variables X1, X2, X3 form a random sample from the uniform distribution on

Question:

Suppose that three random variables X1, X2, X3 form a random sample from the uniform on the interval [0, 1]. Determine the value of E[(X1 − 2X2 + X3)2].
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...