A data set lists weights (lb) ot plastic discarded by households. The highest weight is 573 lb, the mean ot all ot the weights is x = 2.188 lb, and the standard deviation ot the weights is s a. What is the difference between the weight ot 5 73 l and the mean ot the weights? b. How many standard deviations IS that [the difference found in part (a)]? c. Convert the weight ot 5.73 lb to a z score. d. It we consider weights that convert to z scores between 2 and 2 to be neither significantly low nor significantly nigh, is the weight ot 5.73 lb significant? a. The difference is (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.) d. The highest weight is