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explicacin De una muestra alcatoria de 60 autobuses, la oficina de transporte colectivo de la ciudad de Montreal ha calculado que el numero medio de

explicacin

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De una muestra alcatoria de 60 autobuses, la oficina de transporte colectivo de la ciudad de Montreal ha calculado que el numero medio de pasajeros por kilometro es 4.1. De estudios anteriores se sabe que la desviacion estandar de la poblacion es 1.2 pasajeros por kilometro. a) Encuentro el error estandar de la media. (Suponga que la flotilla de autobuses es muy grande.) b) Construya un intervalo de confianza del 95% para el numero medio de pasajeros por kilometro para la poblacion

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