# Question: The amount of time in minutes that an executive of

The amount of time (in minutes) that an executive of a certain firm talks on the telephone is a random variable having the probability density

With reference to part (b) of Exercise 4.60, find the expected length of one of these telephone conversations that has lasted at least 1 minute.

With reference to part (b) of Exercise 4.60, find the expected length of one of these telephone conversations that has lasted at least 1 minute.

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