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OpenStudy (anonymous):

eanut production in Virginia: The average production of peanuts in the state of Virginia is 3000 pounds per acre. A new plant food has been developed and is tested on 60 individual plots of land. The mean yield with the new plant food is 3120 pounds of peanuts per acre with a standard deviation of 578 pounds. At α = 0.05, can one conclude that the average production has increased ?

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