Determine if the following could be a probability distribution for a discrete random variable, x. if no, state why. x 20 30 40 50 p(x=x) 1.1 0.6 .2 .1 yes, the probabilities are all positive. no, while the probabilities are all positive, the p(x=20)=1.1. probabilities cannot exceed 1. no, the values of x are too far apart and the probabilities add up to a value greater than 1. yes, the probabilities add to 1 and they are all positive.