What is the range width of the actual number of people

Reference no: EM13638383

Suppose the Union Station in Chicago (a large train station) contains, on average, 20,000 people. Assume trains and people come in an out at a steady rate, without special correlation. What is the range width of the actual number of people present at the Station at any given moment? (For concreteness, assume the fluctuations do not exceed one sigma.)

Reference no: EM13638383

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