Answer:
215
Explanation:
There are two possibilities in the next two weeks
S = Stock goes up to $330 with a probability of 0.5
S' = Stock goes down to $100 with a probability of 0.5
Expected Value = Σ(Value x probability for each outcome)
= 330 x 0.5 + 100 x 0.5 = 165 + 50 = 215