Product placement. 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. These values are shown below, along with the sales numbers for the six months prior to making the change.

Before Change After Change 20 40 32 55 28 40 39 55 29 40 42 55 29 42 43 58 32 42 45 60 32 43 48 60 34 45 49 61 37 45 50 62 37 46 50 63 38 47 51 66 39 50 52 67 40 56 55 70 Do these results suggest that sales are better after the change in product placement? Test an appropriate hypothesis and state your conclusion. Be sure to check assumptions and conditions.