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Suppose that the incomes of all people in the united states

Suppose that the incomes of all people in the United States who own hybrid (gas and electric) automobiles are normally distributed with a mean of $78,000 and a standard deviation of $8300. Let be the mean income of a random sample of 50 owners of such automobiles. Calculate the mean and standard deviation of and describe the shape of its sampling distribution.

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Basic Statistics: Suppose that the incomes of all people in the united states

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