Refer to Exercise 7.49. Use the laws of expected value and variance of the sum of two

Question:

Refer to Exercise 7.49. Use the laws of expected value and variance of the sum of two variables to compute the mean and variance of X + Y .

In exercise 7.49

The bivariate distribution of X and Y is described here.

х .28 42 .12 .18

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...