Question: A random sample of 40 taxpayers with adjusted gross incomes
A random sample of 40 taxpayers with adjusted gross incomes of between $ 100,000 and $ 200,000 was drawn. These taxpayers claimed an average of $ 9,922 in medical expenses for the year. Assume the population standard deviation for these deductions was $ 2,400. Construct confidence intervals to estimate the average deduction for the population with the following levels of significance:
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