A shopper infers that a product must be of high quality because the manufacturer has been in business a long time. Which heuristic is this an example of

The Compromise effect

Explanation:

Heuristic is a  modelling that explains the two fundamental ways of processing information while making up an opinion.

Data and information can be processed diligently in order to form an opinion which is a more accurate way than the other type known as heuristics .This explains that opinions can also be formed based on just a mere perception of issues or based on the opinion of other people or experts , which in most cases may not give a true representation of the situation at hand.

However , it forms a part of human daily activities and can also be useful in forming the required opinions in the course of daily activities.

One of the effect as seen in the question is bias attitudes or the compromise effect.

first one

explanation: