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A random sample of (n = 12) four year old red pine trees was selected, and the diameter (in inches) of each tree's main stem was measured. The resulting observations are:11.310.712.415.210.112.116.210.511.411.010.712.0Use the above sample to construct a 95% CI for the average stem-diameter of the population of four year old pine trees. Interpret the CI.

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