If XXX is a discrete random variable where P(X=0)=0.3P(X=0)=0.3P(X=0)=0.3, P(X=1)=0.4P(X=1)=0.4P(X=1)=0.4, and P(X=2)=0.3P(X=2)=0.3P(X=2)=0.3, what is E[X]E[X]E[X]?
0.70.70.7
1.01.01.0
1.21.21.2
1.51.51.5