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The interarrival time of cars at entering a gas station follow an Exponential Distribution with mean of 2 minutes. What is the mean rate of

The interarrival time of cars at entering a gas station follow an Exponential Distributionwith mean of 2 minutes. What is the mean rate of car arrivals per hour (Poisson Dist.Rate)?

t = 25

t = 30

t = 2

t = 120

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