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Cierto tipo de batera dura un promedio de 3 aos, con una desviacin tpica de 0,5 aos. Suponiendo que la duracin de las bateras es

Cierto tipo de batera dura un promedio de 3 aos, con una desviacin tpica de 0,5 aos. Suponiendo que la duracin de las bateras es una variable

normal:

Qu porcentaje de bateras se espera que duren entre2 y 4 aos?

Seleccione la respuesta correcta:

  1. 0.9544
  2. 5
  3. 0.05
  4. 95.44
  5. 1

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