2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85822We describe a statistical hypothesis test for the presence of a signal. The test allows the researcher to fix the signal location and/or width a priori, or perform a search to find the signal region that maximizes the signal. The background rate and/or distribution can be known or might be estimated from the data. Cuts can be used to bring out the signal.Data Analysis, Statistics and Probabilitytext