Mathematics, 23.08.2021 19:30 jose55221

En una institución educativa hay 134 estudiantes de 9º, 138 de 10º y 97 de 11º. Si se desea tomar una muestra que tenga representación de cada grado, ¿Cuál técnica recomendaría para para realizar dicha selección y por qué? ¿Cuántos estudiantes quedarían en la muestra de cada grado y cuántos en total?

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En una institución educativa hay 134 estudiantes de 9º, 138 de 10º y 97 de 11º. Si se desea tomar un...