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A random sample of 42 taxpayers claimed an average of $9,579 in medical expenses for the year. Assume the population standard deviation for these deductions
A random sample of 42 taxpayers claimed an average of $9,579
in medical expenses for the year. Assume the population standard deviation for these deductions was $2,386.
Construct confidence intervals to estimate the average deduction for the population with the levels of significance shown below.
1%
2%
5%
level of significance has a lower limit of
and an upper limit of
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