2. Assume Amy wants to buy a car. She is considering three different models. She listed the attributes that are important to her, the weights she assigns to the attributes, and consumer report ratings of the models with respect to those attributes. These data are given as follows. Amy's Consumer Reports Ratings Attributes weights Model X Model S Model T Power 9 7 8 Efficiency 0.2 5 8 6 Durability 0.3 7 Resale Value 0.1 6 Brand Image 0.1 7 5 6 0.3 8 6 9 7 a) which model should Amy choose? b) what other factors should Amy consider other than the above ratings