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2. La alcaldia de Santiago de Cali quiere estimar el gasto promedio mensual que las familias de estrato 1 y 2 hacen en alimentos.

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2. La alcaldia de Santiago de Cali quiere estimar el gasto promedio mensual que las familias de estrato 1 y 2 hacen en alimentos. Para esto tom una muestra de 40 familias donde encontr un ingreso promedio de 400.000 pesos y una desviacin estndar de 100.000 pesos. a. Calcule un intervalo de confianza para el gasto mensual promedio que las familias hacen en alimentos. Procedimiento Resultado

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