The night-shift workers in three of Super Bo’s specialty stores stock about 500 products in about 3 hours. How does this rate compare with the stocking done in the other 97 stores in the chain, which average about 496 products stocked in 3 hours? Are the stockers at the specialty stores doing a “better than average” job? Here’s the info that you need: specialty store... size:3 avg # products stocked: 500 standard deviation: 12.56 All stores... size: 100 avg. # products stocked: 496 standard deviation: 22.13
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