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Los salarios anuales iniciales de estudiantes que acaban de terminar una carrera en administracion se espera que esten entre $30 000 y $45 000. Suponga

Los salarios anuales iniciales de estudiantes que acaban de terminar una carrera en administracion se espera que esten entre $30 000 y $45 000. Suponga que quiere dar un intervalo de confianza de 95 % para estimar la media poblacional de los salarios iniciales. Cual es el valor planeado de la desviacion estandar poblacional? Cuan grande debera ser la muestra si quiere que el margen de error sea

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