Question

24. Let P be a probability function on S = (x1, X2 X3} if P(X1) = 1/4 and P(X3) = 1/3 then P(X2) is equal to
(a) 5/12
(b) 7/12
(c) 3/4
a) none of these​

Answer 1

Answer:

b is correct

Step-by-step explanation:

Answer 2

Answer:

p(X1)+p(X2)+p(X3)=1

1/4+p(X2)+ 1/3=1

1-1/4+1/3=p(X2)

1- 7/12=p(X2)

5/12=p(X2)