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Se toma una muestra de 75 observaciones de una poblaci6n normal, con una desviaci6n estndar de 6, la media de la muestra es de

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Se toma una muestra de 75 observaciones de una poblaci6n normal, con una desviaci6n estndar de 6, la media de la muestra es de 27. Determine el intervalo de confianza de 90% de la media poblacional. (Redondee a tres cifras significativas) El intervalo est entre: (valor minimo) y (valor mximo)

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