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A random sample of 34 taxpayers claimed an average of ?$9,623 in medical expenses for the year. Assume the population standard deviation for these deductions was ?$2,441. Construct confidence intervals to estimate the average deduction for the population with the levels of significance shown below.

a.1 %

b.2 %

c.5 %

a. The confidence interval with a 1% level of significance has a lower limit of ?$ and an upper limit of ?$

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