It is thought that the time between customer arrivals at a fast food business is exponentially distributed with λ equal to 5 customers per hour. Given this information, what is the mean time between arrivals?
A) 12 minutes
B) 5 minutes
C) 5 hours
D) 2 minutes

Question

Quizplus · Accepted Answer

The mean time between arrivals for an exponential distribution is given by 1/λ. Given λ = 5 customers per hour, the mean time is 1/5 hour per customer, which is 12 minutes (since 1 hour = 60 minutes, 60/5 = 12 minutes).

It Is Thought That the Time Between Customer Arrivals at a Fast