Plastic Waste - Data Set 23 \"Garbage\" in Appendix B lists weights (lbs) of pla
ID: 2923566 • Letter: P
Question
Plastic Waste - Data Set 23 "Garbage" in Appendix B lists weights (lbs) of plastic discarded by households. The highest weight is 5.28 lb, the mean of all the weights is 1.911 lb, and the
standard deviation of the weights is 1.065 lb.
a. What is the difference between the weights of 5.28 lb and the mean of the weights?
b. How many standard deviations is that (the difference found in part (a)).
Convert the weight of 5.28 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 5.28 lb significant?
Explanation / Answer
a) Difference is 5.28-1.911 =3.369
b) this is also called z which is (x-mean)/s = (5.28-1.911)/1.065 =3.1634