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Se toma una muestra de tamao 40 y se obtiene una media muestral de20. Si se sabe que la desviacin estndar de 2.5, calcule un

Se toma una muestra de tamao 40 y se obtiene una media muestral de20. Si se sabe que la desviacin estndar de 2.5, calcule un intervalo deConfianza del 90% para los medios poblacionales.Grupo de opciones de respuesta(19.349, 20.774)(19.349, 20.650)(19.492, 20.507)(19.492, 20.650)

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