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En una empresa constructora, el salario medio es de $5.60 por hora y la desviacin estndar es de $0.90. Si se supone que los salarios
En una empresa constructora, el salario medio es de $5.60 por hora y la desviacin estndar es de $0.90. Si se supone que los salarios son una variable aleatoria normal. Qu porcentaje de obreros recibe por hora salarios entre $4.50 y $5.00
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