Hi, just wanted to thank you in advance if you can help me!

Code:

Number of PCs sold (x)
0 1 2 3 4
Number of printers sold (y)
0 .03 .03 .02 .02 .01
1 .02 .05 .06 .02 .01
2 .01 .02 .10 .05 .05
3 .01 .01 .05 .10 .10
4 .01 .01 .01 .05 .15
1. Show the probability distribution for x and y in the following form:
Value of x Pr(x) Value of y Pr(y)
2. What is the number of printers sold on an average?
3. What is the number of PCs sold on an average?

Any and all help would be greatly appreciated. I was sick for about a week and a half and had to miss the lectures... Thanks again!

Also, if you have any websites or anything that you think could help me, I would greatly appreciate it if you would post them for me. Thank you again!