A poll asked for people's opinion on whether closing local newspapers would hurt civic life; 427 of 1005 respondents said it would hurt civic life a lot. Complete parts a through d below. Find the proportion of the respondents who said that closing local papers would hurt civic life a lot. (Round to three decimal places as needed.) Find a 95% confidence interval for the population proportion who believed closing newspapers would hurt civic life a lot. Assume the poll used a simple random sample (SRS). (In fact, it used random sampling, but a more complex method than SRS.) (Round to three decimal places as needed.) Find an 80% confidence interval for the population proportion who believed closing newspapers would hurt civic life a lot. (Round to three decimal places as needed.) Which interval is wider and why? The 95% interval is wider. To get a higher degree of certainty, the interval needs to be widened just on the left side. The 80% interval is wider. To get a higher degree of certainty, the interval needs to be widened. The 95% interval is wider. To get a higher degree of certainty, the interval needs to be widened. The 95% interval is wider. To get a higher degree of certainty, the interval needs to be widened just on the right side.