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 ?$