Which of the following is the correct control chart for customer warting time at a bank (each customer waiteg time will be plotted individually? Cual de los siguentes es el gratico de control corecto para el bempo de espera de los clentes en un banco (se graficara el tiempo de espera de cada chente individualmente Chart (gratco g/s) Orp Chart igratioo np) Ou charn (gratico U) O individual X/ moving range (X individual/ rango movil)

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