Question 1 Continuation of Chapter 6-exercise 7 End of chapter exercises. Not yet answered This is a "show work" question. Attachments are not allowed Use the editor and the space provided below. Marked out of ________________ 3.00 '7 Flag Someone claims that the following is a probability mass function of two random variables X and Y \""95\"\" P(X=x,Y=y)=k(2x+y), x=1,2; y=1,2,3 but k is a constant that is not given by this someone, NOTE: only formulas calculations are acceptable as answers for the following questions Do not answer using tables, (a) Find the k before you proceed to answer probability questions (b) Find the E(X|y=2) and Var(X|y=2) after providing, showing full work, the conditional probability mass function 01X and Y (b) Compare the conditional probability mass functions and the total or unconditional probability mass functions formulas,after you show how to find them. Explain why they are different or the same (depending on what you conclude), IAVBI