An investigation of the properties of bricks used to line aluminum smelter pots was published in The
Question:
a. Find the least squares line relating porosity (y) to mean pore diameter (x).
b. Interpret the y-intercept of the line.
c. Interpret the slope of the line.
d. Conduct a test of model adequacy. Use α = .10.
e. Find r and r2 and interpret these values.
f. Predict the apparent percentage of porosity for a brick with a mean pore diameter of 10 micrometers. Use a 90% prediction interval.
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