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En un estudio donde se quiere verificar si el promedio de la calificacon de un examen es 85 con una desviacin de 5. Calcule la
En un estudio donde se quiere verificar si el promedio de la calificacon de un examen es 85 con una desviacin de 5. Calcule la probabilidad de que para una muestra de 15 estudiantes la calificacin est entre 70 y 90 puntos
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