EXST7005 Fall2010 Daily Quiz 14

EXST7005 Fall2010 Daily Quiz 14 - data was collected on the...

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EXST 7005 Daily Analysis 14 Carefully read the description of the experiment below. Be prepared to answer the questions that follow the design description as a class quiz. In an effort to improve checkout, new electronic self-check-out systems have been installed in many stores. This study compares cashier checkout with self-check-out at Wal-Mart Super Centers in the Jackson, Mississippi, area. Ninety shoppers were randomly chosen and observed on each checkout system and
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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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