Act scores a survey of 1000 students nationwide showed a


ACT Scores, A survey of 1000 students nationwide showed a mean ACT score of 21.4. A survey of 500 Ohio scores showed a mean of 20.8. If the poppulation standard deviation in each case is 3, can we conclude that Ohio is below the national average? Use a=0.05

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Econometrics: Act scores a survey of 1000 students nationwide showed a
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