A decision maker subjectively assigned the following probabilities to the four outcomes of an experiment: P(E1) = 0.15, P(E2) = 0.10, P(E3) = 0.40, and P(E4) = 0.30. Are these probability assignments valid? Explain. Yes, 0 ≤ P(Ei) ≤ 1 for all i and the probabilities' sum is less than 1. Yes, 0 ≤ P(Ei) ≤ 1 for all i and the probabilities' sum is greater than 1. No, the subjective method requires that all probabilities be equal. No, the probabilities do not sum to 1.