Assume we have the following PDF for the random variable X
x | 0 | 1 | 2 | 3 | 4 |
f ( x ) | .2 | .1 | .15 | .3 | .25 |
If Var ( X ) = 2.11, what is Var(3-2X)
Var(3-2X) = Var(3) + Var(2X)
= 0 + 22*Var(x)------------------------(Var(const) = 0 and Var(ax) = a2Var(X))
=4*2.11
= 8.44
Assume we have the following PDF for the random variable X x 0 1 2 3...
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