Question: The U S Postal Service is concerned with the time
The U. S. Postal Service is concerned with the time it takes to deliver mail. It would like not only to deliver mail as quickly as possible but also to have as little variation as possible. Twenty letters are mailed from California state collection boxes to Onguard, Maine. From the following number of days for delivery, what can you tell the Postal Service? Calculate all measures of central tendency and dispersion.
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