A continuous random variable XXX has PDF f(x)=32x2f(x) = \frac{3}{2}x^2f(x)=23x2 for −1≤x≤1-1 \le x \le 1−1≤x≤1. What is the variance Var(X)Var(X)Var(X)?
1/51/51/5
3/53/53/5
1/21/21/2
3/43/43/4