Answer :
The change add to the refrigerator's ORDINAL utility.
Utility refers to the satisfaction that a consumer derived from a product or service that he had purchased. Ordinal utility ranks two products in term of preference, this is why it is also called two commodity model. Ordinal utility theory assume that a consumer will chose a product which gives him an higher level of satisfaction out of two substitutes goods.
Utility refers to the satisfaction that a consumer derived from a product or service that he had purchased. Ordinal utility ranks two products in term of preference, this is why it is also called two commodity model. Ordinal utility theory assume that a consumer will chose a product which gives him an higher level of satisfaction out of two substitutes goods.