(Choose 1 answer)
(See picture)
A. (ii)
B. (iii)
C. (i)
D. (iv)
Let c be the number such that f(x,y) = c(x+y) is the joint probability distribution of two discrete random variables X and Y, where x = 2, 3, 4 and y = 0, 1, 2. Describe the marginal probability distribution of Y.
(i)
P(-k)P(Y=k)
Y
10c
14c
10c
1
14c
2
18c
3
(ii)
P(Y=k)
Y
10c
1
13c
1
18c 2
16c
3
(iii)
P(Y=k)
9c
13c
17c
alto ini
