Preservative Leather Furniture Used in Public Places Can Fade, Crack

Essay

Preservative Leather furniture used in public places can fade, crack, and deteriorate
rapidly. An airport manager wants to see if a leather preservative spray can make the
furniture look good longer. He buys eight new leather chairs and places them in the
waiting area, four near the south-facing windows and the other four set back from the
windows as shown. He assigned the chairs randomly to these spots.
a. Use the random numbers given to decide which chairs to spray. Explain your method
clearly.
b. Briefly explain why your assignment strategy is important in helping the manager assess
the effectiveness of the leather preservative.