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You record the rainfall amounts in the Amazon rain forest for a given month. Suppose that you know the average rainfall is 7.5 inches per

You record the rainfall amounts in the Amazon rain forest for a given month. Suppose that you know the average rainfall is 7.5 inches per month, with a standard deviation of 2.4 inches. Use the Range Rule of Thumb to determine if the following rainfall amounts are "unusual". 2.6 inches O Usual Unusual

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