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Exercise 4045. Points 1, theme: Basic Statistics

Open exercise
Timber volume per hectare was measured in three randomly selected sites in forested areas in Estonia.
Does these measurement represent the mean per hectare timber volume in Estonian forests?


Notice, that the question is not: How well these this sample represents, but: Does it represent. If you think that a larger sample is needed, describe a method for deciding the minimum needed sample size.
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