A manufacturer of latex house paint (brand A) would like to show that its paint is more robust to the material being painted than that of its two closest competitors. The response is the time, in years, until chipping occurs. The study involves the three brands of paint and three randomly chosen materials. Two pieces of material are used for each combination.
Â
Material
Brand of Paint
A
B
C
5.50
5.15
4.75
4.60
5.10
5.20
5.60
5.55
5.40
5.48
5.05
4.95
4.50
4.55
(a) What is this type of model called?
(b) Analyze the data, using the appropriate model.
(c) Did the manufacturer of brand A support its claim with the data?
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