A country's tax collection agency reported that 82% of individual tax returns were filed electronically in 2017. A random sample of 223 tax returns from 2018 was selected. From this sample, 178 were filed electronically. Complete parts a through c. C... a. Construct a 95% confidence interval to estimate the actual proportion of taxpayers who filed electronically in 2018. The confidence interval has a lower limit of 0.746 and an upper limit of 0.851. (Round to three decimal places as needed.) b. What is the margin of error for this sample? The margin of error is. (Round to three decimal places as needed)

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