The owner of a small organic food store was concerned about her sales of a specialty yogurt manufactured in Greece. As a result of increasing fuel costs, she recently had to increase its price. To help boost sales, she decided to place the product on a different shelf (near eye level for most consumers) and in a location near other popular international products. She kept track of sales (number of containers sold per week) for six months after she made the change. The values are shown below, along with the sales numbers for the six months prior to making the change, in stem-and-leaf displays.
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