Groups of adults are randomly selected and arranged in groups of 5. The random variable X represents the number of adults in the group who have at least one child. Is this a val discrete probability distribution? Justify your answer. (5 points) x = number of adults who have at least one child P(x) 0 0.04 0.06 0.21 3 0.33 0.20 5 0.16 O This is a valid discrete probability. O This is NOT a valid discrete probability. O The random variable is numerical. O The random variable is not numerical. O The sum of P(x) = 1. O The sum of P(x) # 1. O Each P(x) is 0