To determine the average afternoon wait time in security lines at an airport, officials

Chapter 1, Problem 1.7.117

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To determine the average afternoon wait time in security lines at an airport, officials monitored four passengers, each at a different gate. The time that each passenger entered a security line and the time the same passenger cleared the checkpoint was recorded, as shown below. Find the average (mean) wait time for these passengers. 117 Time Time entered cleared Passenger at Gate A 3:05 pm 3:21 pm Passenger at Gate B 3:03 pm 3:13 pm Passenger at Gate C 3:01 pm 3:09 pm Passenger at Gate D 3:02 pm 3:16 pm

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