The probability distribution of a discrete random variable is given below:
Value x of X
-3
-2
-1
0
1
P(X=x)
0.24
0.15
0.23
0.11
0.27
Let Fx be the cumulative distribution function of X.
Compute the following
Fx(−1)=
Fx(−2)−Fx(−3)=
Fx(−9/4)=
My answer Fx(−1)=0.23
$Fx(-2)-Fx(-3)=0.15-0.24=-0.09
Is it correct?