Question 4 2 pts You are deciding whether to go for a walk. Your utility from going for a walk for t minutes is U(t) = 1/2 if it is dry, but if there is a thunderstorm while you are walking, your utility will be zero. There is a 20% chance of a thunderstorm in the next 64 minutes. What is your expected utility from going for a 64-minute walk? O 16 0 6 O 6.4 None of the above