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1.En un estudio sobre el desempeo escolar de nios y nias y adolescente un investigador encontr que de una muestra de 730 alumnos masculinos, 540

1.En un estudio sobre el desempeo escolar de nios y nias y adolescente un investigador encontr que de una muestra de 730 alumnos masculinos, 540 aprob el curso y en una muestra de 777 alumnas, 680 aprobaron el curso. Probar con un nivel de confianza de 95% la hiptesis de que el porcentaje de alumnas que aprueba el curso es mayor que el de los alumnos.

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