The following table represents the probability of the number of cars owned by a college student Give your answer to at least 3 decimal places X 0 1 2 3 P x 0 5 0 35 0 12 0 03 a Is this a valid discrete probability distribution Select an answer b Find the mean number of cars owned c Find the standard deviation of the number of ca d Find 2 Question Help Message instructor Submit Question Select an answer No since P x 1 and 0 P x 1 Yes since P x 1 and 0 P x 1 Yes since P x 1 and P x 0