Solved: Difference in the mean allowance nationally, Basic Statistics

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Difference in the mean allowance nationally

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Q: In a recent national survey, the mean weekly allowance for a nine-year-old child from his parents was $3.65. A random sample of 45 nien-year-old in northwestern Ohio revealed the mean allowance to be $3.69 with standard deviation of .24. At the .05 level of significance, is there a difference in the mean allowance nationally and the mean allowance in northwestern Ohio for nine-year-olds?

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