the internal revenue service reports that the mean federal income tax paid in a year was $8040. Assume that the standard deviation is $5000. The IRS plans to draw a sample of 1000 tax returns to study the effect of a new tax law. d. Would it be unusual if the sample mean were less than $7500? e. Can you tell whether it would be unusual for an individual to pay a tax of less than $7500? Explain.

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