Q29.webp

Question: 29
(Choose 1 answer)
(See picture)
A. (i)
B. (ii)
C. (iii)
D. (iv)
Let X and Y be independent random variables, each
taking the values -1, 0 or 1. Let Z= X +2Y. How
many possible values does Z have?
(i) 9
(ii) 8
(iii) 7
(iv) 6