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The duration of a phone call is modeled by using an exponential random variable with variance...

The duration of a phone call is modeled by using an exponential random variable with variance 4.5 hours2. If the duration of the phone call has already lasted for 9 minutes, then what is the probability that the duration of the phone call will last at least 65 minutes?

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Expert Solution

The probability that the duration of the phone call will last at least 65 minutes given that the call has already lasted for 9 minutes is 0.64410.

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orchestra answered 1 year ago
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