A local 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.
The results of the ANOVA are summarized in the following table. Based on the p-value of the test, make the proper conclusion.
A) There is sufficient evidence (at ) to indicate that the mean prices of grocery items at the three supermarkets are identical.
B) There is insufficient evidence (at ) to indicate differences among the mean prices of grocery items at the three supermarkets.
C) There is sufficient evidence (at ) to indicate differences among the mean prices of grocery items at the three supermarkets.
D) No conclusions can be drawn from the given information.
Correct Answer:
Verified
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