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Choose the best answer. If an economist wishes to determine whether there is evidence that mean family income exceeds $50,000 in a community, then: a.

Choose the best answer. If an economist wishes to determine whether there is evidence that mean family income exceeds $50,000 in a community, then: a. a one-tail test should be utilized. b. a two-tail test should be utilized. c. either a one-tail or two-tail test could be used with equivalent results. d. None of the above

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