Extending the life of an aluminum smelter pot. Refer to the American Ceramic Society Bulletin (February 2005) study of bricks that line aluminum smelter pots, Exercise. You fit the simple linear regression model relating brick porosity (y) to mean pore diameter (x) to the data in the SMELTPOT file
(a) Find an estimate of the model standard deviation, σ.
(b) In Exercise, you predicted brick porosity percentage when x = 10 micrometers. Use the result, part a, to estimate the error of prediction.
Exercise
(d) Predict the apparent porosity percentage for a brick with a mean pore diameter of 10 micrometers.