Arnold Ziffel the Marathon County Agricultural Extension Agent knows that
Arnold Ziffel, the Marathon County Agricultural Extension Agent, knows that wheat yields in Marathon County this year have a mean of 25 bushels to the acre with a standard deviation of 10. Wheat yields are normally distributed. What is the proportion of farms that will have yields above 37 bushels per acre? Above 44 bushels per acre? Between 17 and 23 bushels per acre?
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