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Mathematics, 04.12.2019 01:31 sangamlama
Alocal consumer reporter wants to compare the average costs of grocery items purchased at three different supermarkets, a, b, and c. prices (in dollars) were recorded for a sample of 60 randomly selected grocery items at each of the three supermarkets. in order to reduce item-to-item variation, the prices were recorded for each item on the same day at each supermarket.
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