The article Drift in Posturography Systems Equipped with a Piezoelectric Force Platform: Analysis and Numerical Compensation (L.
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a. Compute the least-squares line for predicting y from x.
b. Plot the residuals versus the fitted values. Does the least-squares line seem appropriate?
c. Compute the least-squares line for predicting y from x2.
d. Plot the residuals versus the fitted values. Does the least-squares line seem appropriate?
e. For each model, find a 95% confidence interval for the mean value of y when x = 0.32. Are the confidence intervals similar?
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