A data set lists weights (lb) of plastic discarded by households. The highest weight is 5.17 lb, the mean of all of the weights is x = 1.997 lb, and the standard deviation of the weights is s = 1.045 lb.

a. What is the difference between the weight of 5.17 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 5.17 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 5.17 lb significant?

Answer rating: 100% (QA)

a The difference betwe... View the full answer