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NUMBERBENDER CHALLENGE McDonald's monitors that amount of time in minutes that a customer waits for their order while going to the drive-thru. The boss tells

NUMBERBENDER CHALLENGE McDonald's monitors that amount of time in minutes that a customer waits for their order while going to the drive-thru. The boss tells the staff that their serving time is good if the standard deviation is under 4 minutes. How did they perform if the following times were recorded: 5, 3, 2, 8, 7, 2.5 (in minutes)

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