Explaining why prices do not immediately adjust to business cycles remains one of the most important unresolved questions in macroeconomics. When researchers ask managers for an explanation, their responses reveal a reluctance to vary prices for fear of quot;antagonizing customers.quot; However,...

We propose an approach for determining the sample size required when using an experiment to train and certify a targeting policy. Calculating the rate at which the performance of a targeting model improves with additional training data is a complex problem. We approximate the problem by grouping...