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the length of a phone call is exponentially distributed with an average of 5 minutes, what...

the length of a phone call is exponentially distributed with an average of 5 minutes, what is the expected length given it is > 2 minutes? use conditional probabilities

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Answer #1

he Let Xbe the handom variable denoting Jengeh at a phone call. XExp(5) The pdt ofxi, f e ,eo o.ow C0 : E(X Ix>2)-x.es 2 2 2

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