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A company interested in lumbering rights for a certain tract of slash pine trees is told that the mean diameter of these trees is 17

A company interested in lumbering rights for a certain tract of slash pine trees is told that the mean diameter of these trees is 17 inches with a standard deviation of 4 inches. Assume the distribution of diameters is normally distributed. What percent of the trees will have diameters between 13 and 20 inches?

Write the answer inpercent with 2 decimal places.

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