12) A biologist is studying the possible role of earthworms on the fertility of farm soils. As part of this research, the number of earthworms per acre of farmland is being estimated. During the first phase of this study, a total of 5 one-meter square samples were taken per acre. The number of earthworms in each of the five samples was carefully counted and the results used to estimate the total number of earthworms per acre. How can this estimate of the number of earthworms per acre be improved?
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A biologist is studying the possible role of earthworms on the fertility of farm soils. As part...
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