1.

For a random variable V(X) = 4. Find V(3X +4) and V(-3X).

Answer»

V(3X+4) = 32 V(x) 

= 9 (4) 

= 36;

V(-3X) = (-3)2 V(x) 

= 9 (4) 

= 36; 

Since V(aX+b)

=a2 V(X),



Discussion

No Comment Found