A newspaper article discussed the opening of a Whole Foods Market in the Time -Warner building in New York City. The following data (stored in the file WHOLEFOODS 1) compared the prices of some kitchen staples at the new While Food Market and the Fairway super -market located about 15 blocks form theTime - Warner building.
At the 0.01 level of significance, is there evidence that the mean price is higher at Whole Foods Market than at the Fairway supermarket?
Item Whole Foods Fairway
Half - gallon milk 2.19 1.35
Dozen eggs 2.39 1.69
Tropicana orange juice (64 oz.) 2.00 2.49
Head of Boston lettuce 1.98 1.29
Ground round, 1 lb. 4.99 3.69
Bumble Bee tuna, 6 oz. can 1.79 1.33
Granny Smith apples (1lb.) 1.69 1.49
Box DeCecco linguini 1.99 1.59
Salmon steak, 1 lb. 7.99 5.99
Whole chicken, per pound 2.19 1.49