A country's tax collection agency reported that 87% of individual tax returns were filed electronically in 2017. A random sample of 214 tax returns from 2018 was selected. From this sample, 180 were filed electronically. Complete parts a through 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 and an upper limit of (Round to three decimal places as needed.)