In a Local Community There Are Three Grocery Chain Stores

Multiple Choice

In a local community there are three grocery chain stores. The three have been carrying out a spirited advertising campaign in which each claims to have the lowest prices. A local news station recently sent a reporter to the three stores to check prices on several items. She found that for certain items each store had the lowest price. This survey didn't really answer the question for consumers. Thus, the station set up a test in which 20 shoppers were given different lists of grocery items and were sent to each of the three chain stores. The sales receipts from each of the three stores are recorded in the data file Groceries. Based on the sample data, which store has the highest average prices? Use Fisher's LSD test if appropriate.

A) Store 1
B) Store 2
C) Store 3
D) There is no difference between the average prices.