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Unformatted text preview: data was collected on the number of items, the length of time the shopper was in line. Although customers checked out a similar number of items (8.74 items and 8.48 items) the mean checkout times were 5.92 minutes for the cashier system and 11.22 minutes for the electronic self-checkout system. Our objective at this time is to determine if there a statistically significant difference in the mean length of time taken for checkout for the two systems....
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- Fall '08