M2.5. WINE INGREDIENTS The quality of wine is impacted by the wine's Density, Volatile Acidity (%), Residual Sugar (grams), and Alcohol (%). A sommelier is trying to estimate the quality of the wine based on these four variables. The sommelier has collected some data on 200 wines. The sommelier would like to build a multiple regression model to estimate the quality based on these four variables.

Based on your best model (part d) how should the sommelier estimate the quality of a wine with a Density of 1.0, Volatile Acidity of 0.70%, Residual Sugar of 2 grams, and Alcohol of 12%?