The sign on the elevator in the Peters Building, which houses the School of Business and Economics at Wilfrid Laurier University, states, “Maximum Capacity 1,140 kilograms (2,500 pounds) or 16 Persons.” A professor of statistics wonders what the probability is that 16 persons would weigh more than 1,140 kilograms. Discuss what the professor needs (besides the ability to perform the calculations)

in order to satisfy his curiosity.