Consider an espresso stand with a single barista.Customers arrive to the stand at the rate of 28 per hour according to a Poisson distribution.Service times are exponentially distributed with a service rate of 35 customers per minute.The average time in minutes a customer spends in the system i.e. ,waiting and being served)is
A)0.114 minute
B)0.143 minute
C)6.84 minutes
D)8.58 minutes

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The Answer of Consider an espresso stand with a single barista.Customers arrive to the stand at the rate of 28 per hour according to a Poisson distribution.Service times are exponentially distributed with a service rate of 35 customers per minute.The average time in minutes a customer spends in the system i.e. ,waiting and being served)is
A)0.114 minute
B)0.143 minute
C)6.84 minutes
D)8.58 minutes

Consider an Espresso Stand with a Single Barista