Determine whether each distribution is a probability distribution. If not, explain why not. 11. X 2 3 4 P(X) 0 .3 1/5 1/5 3/10 12. X 3 6 8 P(X) 0.2 3/5 3/10 13. X 20 30 40 50 P(X) 0.1 0.1 0.5 0.3 14. X 11 12 13 14 15 P (X) 0.6 0.2 0.1 0.05 0.05 15. X 17 18 19 20 P(X) -0.1 0.3 0.4 0.4 vour ansi