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Autos arrive at a toll plaza located at the entrance to a bridge at a rate...

Autos arrive at a toll plaza located at the entrance to a bridge at a rate of 20 per minute during the 5:00-to-6:00 . Determine the following probabilities assuming that auto has just arrived.

a. What is the probability that the next auto will arrive within 2 minutes?

b. What is the probability that the next auto will arrive within 3 minutes

Math   Statistics-And-Probability   
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