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Se sospecha que el sueldo mensual que reciben actualmente los recin egresados de cierta universidad ha aumentado superando la media que histricamente se conoca de

Se sospecha que el sueldo mensual que reciben actualmente los recin egresados de cierta universidad ha aumentado superando la media que histricamente se conoca de $12,300, con una desviacin de $1,500. Se toma una muestra de 100 graduados con empleo y se obtiene una media de $12,480. Realizar la prueba de hiptesis y llegar a una conclusin considerando un nivel de significancia del 10%

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