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Posted - 02/26/2012 : 08:59:03 Out of 15 statistics problems this week...I am down to the last 2. Please help me. Thank you in advance :)
Three supermarket chains in the Denver area each claim to have the lowest overall prices. As part of an investigative study on supermarket advertising, the Denver Daily News conducted a study. First, a random sample of nine grocery items was selected. Next, the price of each selected item was checked at each of the three chains on the same day. Use 0.05 level of significance.