Estimate AR(1) to AR(4) models for beer consumption per capita, using robust standard errors. Use BIC, AIC, and AICc to decide which is the best model. Test beer and wine consumption for stationarity...

Estimate AR(1) to AR(4) models for beer consumption per capita, using robust standard errors. Use BIC, AIC, and AICc to decide which is the best model.

Test beer and wine consumption for stationarity using the Dickey-Fuller test, based on one lag. What can you conclude?