If XXX is a discrete random variable with P(X=1)=0.3,P(X=2)=0.7P(X=1) = 0.3, P(X=2) = 0.7P(X=1)=0.3,P(X=2)=0.7, what is E[X]E[X]E[X]?
1.31.31.3
1.51.51.5
1.71.71.7
2.02.02.0