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Sparagowsky & Associates hace un estudio sobre los tiempos necesarios para atender a un cliente en la ventanilla de su automvil en los restaurantes de

Sparagowsky & Associates hace un estudio sobre los tiempos necesarios para atender a un cliente en la ventanilla de su automvil en los restaurantes de comida rpida. En McDonald s el tiempo medio para atender a un cliente fue 2.78 minutos (The Cincinnati Enquirer, 9 de julio de 2000). Los tiempos de servicio como los de estos restaurantes suelen seguir una distribucin exponencial. a. Cul es la probabilidad de que el tiempo para atender a un cliente sea menor que 2 minutos? b. De qu tiempo para atender a un cliente sean ms de 5 minutos? C. De qu tiempo para atender a un cliente sean ms de 2.78 minutos?

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