Question: In an advertisement in a local newspaper, Best Food supermarket attempted to convince consumers that it offered them the lowest total food bill. To do this, Best Food presented a comparison of 60 grocery items purchased at three supermarkets – Best Food, Public, and Cash ‘N Carry – on a single day. The data are on the tab BestFood. Use the data to compare the mean prices of grocery items at the three supermarkets. (10 points)