SOLUTION: The arrival times between cars at an on-ramp can be modeled by a exponential distribution with a mean arrival time of 0.5 minutes. What is the probability of seeing 2 cars in line

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Question 912882: The arrival times between cars at an on-ramp can be modeled by a exponential distribution with a mean arrival time of 0.5 minutes. What is the probability of seeing 2 cars in line? 5?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Poisson Distribution
P(x = 2) = poissonpdf(.5,2)
P(x = 5) = poissonpdf(.5,5)