State whether each of the following probability distributions can be considered as a valid probability distribution. Give reasons for your answer. a X 0 2 P(X 0.04 0.6 0.36 leads obtained in the abo b. wines for X? [Hint: Exam X -2 0 1 P(X 0.2 - 0.41 0.36 0.85 X: Number of howel X C. P(X) X 10 20 30 40 P(X) 0.2 0.15 0.36 0.25