Time between consecutive arrivals of customers to a grocery store is exponential with a rate of 3 per minute. What is the probability that a time of 2 minutes will elapse between the arrivals of two consecutive customers?
A) $e^{-6}$
B) $e^{-3}$
C) $1-e^{-6}$
D) $1-e^{-3}$

Question

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The Answer of Time between consecutive arrivals of customers to a grocery store is exponential with a rate of 3 per minute. What is the probability that a time of 2 minutes will elapse between the arrivals of two consecutive customers?
A) $e^{-6}$
B) $e^{-3}$
C) $1-e^{-6}$
D) $1-e^{-3}$

Time Between Consecutive Arrivals of Customers to a Grocery Store e−6e^{-6}e−6

Time Between Consecutive Arrivals of Customers to a Grocery Store $e^{-6}$