A single volunteer octogenarian usher can scan tickets with a handheld device and direct theater patrons to their seats at a rate of 30 per hour with an accuracy rate approaching? 23%. On? average, about? twenty-five customers arrive every hour for assistance and always? wait, regardless of how long the line gets. Arrivals are governed by the Poisson distribution and service is governed by the exponential distribution. How many theater patrons are waiting on their favorite octogenarian? usher?