Two tire-quality experts examine stacks of tires and assign quality ratings to each tire on a 3-point

Question:

Two tire-quality experts examine stacks of tires and assign quality ratings to each tire on a 3-point scale. Let X denote the grade given by expert A and Y denote the grade given by B. The following table gives the joint, distribution for A' and Y. Find ?x a n d ?y.

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...