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Una entidad social dedicada a la proteccin del nio realiz una muestra al azar de 225 mujeres, de una poblacin de 6.000, con el fin

Una entidad social dedicada a la proteccin del nio realiz una muestra al azar de 225 mujeres, de una poblacin de 6.000, con el fin de determinar sus actitudes ante ciertos problemas sociales. Una de las preguntas que tiene relacin directa con el objetivo de la encuesta deca: Cree usted que las madres de los nios con una edad inferior a los 7 aos deben trabajar fuera del hogar? 90 contestaron negativamente. Si se desea que esa muestra tenga una confianza del 95%, cul deber ser el error en la muestra?

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