Refer to Exercise 16.20. a. Test whether the three equations relating thickness to temperature are parallel. b.

Question:

Refer to Exercise 16.20.
a. Test whether the three equations relating thickness to temperature are parallel.
b. Test at the μ = .05 level if there is a significant difference in the mean thicknesses of the coating from the three processes after adjusting for the temperature in the lab.
c. Place 95% confidence intervals on the mean adjusted thicknesses of the coating for the three processes.
In exercise