- #1

LokLe

- 37

- 5

- Homework Statement
- In a box of ten tickets numbered 0, 1, 2,...,9. You pick at random 2 tickets from this box. Let

X is the larger number in these two tickets, and Y be the smaller one.

(a) Find the distributions of X, Y and their joint distribution.

(b) Find the distribution of Z=X-Y.

(c) Compute E(X), Var(X), E(Z) and Var(Z).

- Relevant Equations
- None

Hi. I have found the answer to a and c (I don't know whether it is correct) but I do not know what I should find in question b.

Is my method correct and how should I solve part b?

Thank you for your help!

Is my method correct and how should I solve part b?

Thank you for your help!