A manager is hoping to reach a certain target for camera sales in his store, which sells between 10 and 20 cameras a week  Typically, most cameras sold in any week are the less expensive economy models, and his store has sold relatively fewer of the more expensive, high-end cameras  The manager realizes that if, on average, three more cameras sold each week were high-end instead of economy models, the store would reach its target in sales
The manager prepares a detailed information sheet for the sales associates, outlining the numerous advantages of the high-end cameras over the economy cameras, and provides each sales associate with a portfolio of contrasting photos of the same images, showing the clearly superior image quality of the high-end cameras
Camera stores that are part of the same national franchise in major metropolitan locations, like New York or Los Angeles, sell comparatively large numbers of the high end cameras.