Question: A single Automated Teller Machine (ATM) is located on the ground floor of a busy building. Service time at this machine is exponentially distributed. On

A single Automated Teller Machine (ATM) is
A single Automated Teller Machine (ATM) is located on the ground floor of a busy building. Service time at this machine is exponentially distributed. On average, the ATM machine can serve a customer in 2 minutes (30 customers an hour). Customer arrivals at the machine are Poisson distributed, with an average of 25 customers an hour. Relevant formulas to analyze this M/M/1 model are available at the back of the exam. Please answer the following three questions, based on this information. What is the average amount of time it takes you to get money from this ATM (in minutes)? This includes both waiting to use the ATM and actually using it. A. 0.75 minutes O B. 12.5 minutes O C. 0.2 minutes D. 1 minutes E. 12 minutes

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