Submit test point(s) possible A data set lists weights (Ib) of plastic discarded by households. The highest weight is 5 72 lb, the mean of all of the weights is x = 1972 lb, and the standard deviation of the weights is s = 1 425 lb a. What is the difference between the weight of 5.72 lb and the mean of the weights? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the weight of 5 72 lb to a z score d. If we consider weights that convert to z scores between - 2 and 2 to be neither significantly low nor significantly high, is the weight of 5.72 lb significant? a. The difference is lb (Type an integer or a decimal Do not round ) b. The difference is standard deviations (Round to two decimal places as needed ) c. The z score is z= (Round to two decimal places as needed ) 19 d. The highest weight is