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The price of a head of iceberg lettuce varies greatly with the season and the geographic location of a store.

The price of a head of iceberg lettuce varies greatly with the season and the geographic location of a store. During February, a researcher contacts a random sample of 39 grocery stores across Canada and asks the produce manager of each to state the current price charged for a head of iceberg lettuce. Using the researcher's results that follow, construct a 99% confidence interval to estimate the mean price of a head of iceberg lettuce in February in Canada. Assume that σ is 0.205.

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