math
posted by tomas .
17. Burger King's DriveThrough: Suppose that cars arrive at Burger King's drivethrough at the rate of 20 cars every hour between 12:00 noon and 1:00 PM. A random sample of 40 onehour time periods between 12:00 noon and 1:00 P.M. is selected and has 22.1 as the mean number of cars arriving.
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