Suppose that X is a discrete random variable with probability mass function given by: p(1) = 1/10, p(2) = 3/10, p(3) = 2/10, p(4) = 3/10, and p(5) = 1/10, a. Plot p(x) b. Compute and plot F(x) c. Compute P(1.4≤X≤4.2)