2 Given the discrete probability distribution above determin

2)

Given the discrete probability distribution above, determine the following:

Solution

P(X <= 19) = P(X = 16) + P(X = 17) + P(X = 18) + P(X = 19) = 0.2+0.2+0.1+0.1 = 0.6

P(X > 17) = P(X = 18) + P(X = 19) + P(X = 20) = 0.1+0.1+0.4 = 0.6

P(X < 20) = P(X = 16) + P(X = 17) + P(X = 18) + P(X = 19) = 0.2+0.2+0.1+0.1 = 0.6