A coin with P(H)=0.7P(H) = 0.7P(H)=0.7 is flipped once. Let X=1X = 1X=1 if heads, X=0X = 0X=0 if tails. What is E[X]E[X]E[X]?
0.30.30.3
0.50.50.5
0.70.70.7
1.01.01.0