Suppose we study 500 live oak trees in georgia. a parameter of this population a.) the mean age of all trees b.) the mean age of all live oak trees c.) the mean age of 500 live oak trees d.) the mean age of all live oak trees in georgia

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π