The percentages of copper and iron in a certain kind of ore are, respectively, X1 and X2.

Question:

The percentages of copper and iron in a certain kind of ore are, respectively, X1 and X2. If the joint density of these two random variables is given by

Use the distribution function technique to find the probability density of Y = X1 + X2. Also find E(Y), the expected total percentage of copper and iron in the ore.

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...