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  3. a marketing research firm wishes to compare the prices charged...

Question: a marketing research firm wishes to compare the prices charged...

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A marketing research firm wishes to compare the prices charged by two supermarket chains-Millers and Alberts. The research firm, using a standardized one-week shopping plan (grocery list), makes identical purchases at 10 of each chains 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 at the 10 Millers stores are $121.92 and $1.40, respectively. It is also found that the mean and the standard deviation of the shopping expenses at the 10 Alberts stores are $114.81 and $1.84 respectively Assuming normality, test to see if the corresponding poonstandard deviations differ by setting a equao5ale o sethe equal variances procedure to compare population means? 05. I (a) Calculate the value of the test statistic. (Do not round intermediate calculations. Round your answer to 2 decimal places.) Test statistic (b) Calculate the critical value. (Round your answer to 2 decimal places.) Critical value (c) At the 0.05 significance level, what it the conclusion? Reject Ho Fail to reject Ho

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