In the probability distribution to the right, the random variable X represents the number of marriages an individual aged 15 years or older has been X P(x) involved in. Complete parts (a) through (f) below. 0 0.264 1 0.573 2 0.126 3 0.031 4 0.005 5 0.001 (a) Verify that this is a discrete probability distribution. This is a discrete probability distribution because between and , inclusive, and the of the probabilities is (Type whole numbers. Use ascending order.) sum product mean