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2 weeks ago
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.
3 2 2 1 9 0 0 5 9 7 8 6 3 7 4

b. Briefly explain why your assignment strategy is important in helping the manager assess the effectiveness of the leather preservative.
Textbook 

Stats: Modeling the World


Edition: 4th
Authors:
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wrote...
2 weeks ago
a. Use one digit at a time, ignoring 0, 9 and any repeated numbers. Choose two chairs from each row. (Example: 3, 2, 5, and 7)
b. Windows may play a role in the leather's life (sun, heat, etc.). Blocking can reduce variability from that source.
wrote...
2 weeks ago
This helped my grade so much
wrote...
2 weeks ago
Perfect
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