For the Scottish races data of Section 2.6, the Bens of Jura Fell Race was an outlier for an ordinary linear model with main effects of climb and distance in predicting record times. Alternatively the residual plots might merely suggest increasing variability at higher record times. Fit this model and the corresponding interaction model, assuming a gamma response instead of normal.

Interpret results. According to AIC, what is your preferred model for these data?