The mean collection period for accounts receivable at Ephemeral Products is 18.5 days with a standard deviation of 4.8 days. (a) What is the standardized z-score for an account that is paid in 30 days? (Round your answer to 3 decimal places.) (b) Is that account an outlier? Yes No (c) How many days (to the nearest integer) would qualify an account as an outlier? The account would have to be days or longer to be considered an outlier