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A marketing research firm wishes to compare the prices charged by two supermarket chains Miller's and Abert's. The research firm, using a standardized one-week shopping

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A marketing research firm wishes to compare the prices charged by two supermarket chains Miller's and Abert's. The research firm, using a standardized one-week shopping plan (grocery list), makes identical purchases at 10 of each chaln's stores. The stores for each chain are randomly selected, and all purchases are made during a single week. It is found that the mean and the standard deviation of the shopping expenses of the to Miller's stores are x1=$124.65 and 81=1.03. It is also found that the mean and the standard devlation of the shopping expenses at the 10 Albert's stores are x2=$123.85 and w2=1.22. (a) Calculote the value of the test statistic, (Do not round intermediate calculations. Round your answer to 2 decimal places.) (b) Calculate the critical value. (Round your answer to 2 decimal piaces.) (c) At the 0.01 significance level, what it the conclusion? Fail to reject Reject

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