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A random sample of 42 taxpayers claimed an average of ​$9 comma 786 in medical expenses...

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Statistics

A random sample of 42 taxpayers claimed an average of ​$9 comma786 in medical expenses for the year. Assume the populationstandard deviation for these deductions was ​$2 comma 387.Construct confidence intervals to estimate the average deductionfor the population with the levels of significance shown below. a.1 % b. 2 % c. 5 %

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