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 Wholefoods1)compared the prices of some kitchen staples at the new Whole Foods market and at the Fairway supermarket located about 15 blocks from Time-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 and also interpret the meaning of the p-value in a.