Mathematics, 09.12.2020 04:40 kimlyn58p0wyn0

A representative sample of oak trees in a forest shows the trees to have a mean circumference of 19.7 inches and a standard deviation of 1.3 inches.
Assuming the circumferences are normally distributed, estimate the
proportion of oak trees in this forest that have a circumference greater than
21 inches. Explain or show your reasoning.

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A representative sample of oak trees in a forest shows the trees to have a mean circumference of 19...