A mobile conversation follows a exponential distribution f (x) = (1/3 – McqOptions

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1.	A mobile conversation follows a exponential distribution f (x) = (1/3)e-x/3. What is the probability that the conversation takes more than 5 minutes?
A.	e-5/3
B.	e-15
C.	5e-15
D.	e-5/3
Answer» B. e-15

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