Attention, shoppers: Did you find everything you were looking for? Retail customers who answer “yes” to this question might very well represent the Holy Grail to retail operators who want to increase their sales with only a modest increase in costs or, in some cases, increase sales by merely reallocating staff within a store at no extra cost. Impossible? Not according to a new study on retail store execution by Wharton operations and information management professors Marshall L. Fisher and Serguei Netessine , and Wharton doctoral student Jayanth Krishnan. Using proprietary data collected over 17 months from a large retail operation with more than 500 stores, the Wharton experts determined that sales and customer satisfaction are not merely driven by a customer’s ability to find products on the shelf.…