Question: Five brands of paint are compared on the basis of drying time (in minutes). The paints are put on 6 different type surfaces, a-f, as shown below.

1. [10 points] Does surface type yield a significant difference in drying time at the 90% confidence level? (When answering this problem, assume that the (brand*surface) interaction is NOT significant).
2. [10 points] What brand(s) and which surface(s) yield the significantly lowest drying time at the 90% confidence level? (When answering this problem, assume that the (brand*surface) interaction is NOT significant). Hint : Use the Anova multiple range test.

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