Answer: A least-squares regression analysis was performed
Chapter , Problem R12.3(choose chapter or problem)
A least-squares regression analysis was performed on the data. Some computer output and a residual plot are shown below. A Normal probability plot of the residuals (not shown) is roughly linear. Predictor Coef SE Coef T P Constant 70.44 52.90 1.33 0.213 Thickness 274.78 88.18 *** *** S ? 56.3641 R-Sq ? 49.3% R-Sq(adj) ? 44.2% s Interpret computer output from a least-squares regression analysis. Casting aluminum Construct and interpret a 95% confidence interval for the slope of the population regression line. Explain how this interval is consistent with the results of Exercise R12.2. s Check conditions for performing inference about the slope B of the population (true) regression line.
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