SOLUTION: To bid competitively for the lumbering rights on a certain tract of land, a wood product firm needs to know the mean of the diameter of the trees on the tract to within 2 inches, w
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Question 204812: To bid competitively for the lumbering rights on a certain tract of land, a wood product firm needs to know the mean of the diameter of the trees on the tract to within 2 inches, with a probability of .90. How large a sample of trees should be selected from the tract to estimate the mean diameter if it is known that the diameter of the usable timber on the tract ranges from 10 to 38 inches. Answer by stanbon(75887) (Show Source):