Hypothesis testing
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In a recent national survey, the mean weekly allowance for a nine-year-old child from his or her parents was reported to be $3.65. A random sample of 45 nine-year-olds in north-western Ohio revealed the mean allowance to be $3.69 with a standard deviation of 0.24. At the .05 level of significance, is there a difference in the mean allowances nationally and the mean allowances in north-western Ohio for nine-year-olds?
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