Question: 29. Refer to Problem 14.12. a) What does the plot of the residuals against the predictor suggest? b) Using a gamma GLM, fit the linear

29. Refer to Problem 14.12.

a) What does the plot of the residuals against the predictor suggest?

b) Using a gamma GLM, fit the linear model Compare the parameter estimates and the standard error of the slope to results obtained using least squares. Interpret.

c) Compare the two fits to the least squares fit of the model with the outlier deleted. Which fit seems more robust to the effect of the outlier?

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