For Problems 1-4 use Minitab with sample data and confidence level to construct the confidence interval estimate of the population proportion p. 1. n = 400, x = 200, 95% confidence 2. n = 1200, x =...

Extracted text: For Problems 1-4 use Minitab with sample data and confidence level to construct the confidence interval estimate of the population proportion p. 1. n = 400, x = 200, 95% confidence 2. n = 1200, x = 300, 99% confidence 3. n = 1655, x = 175, 98% confidence 4. n = 2015, x = 1776, 90% confidence 5. Library Cards: In a Harris poll, 2306 randomly selected adults were surveyed and 1476 of them said that they had a library card. a. Find the point estimate of the percentage of adults who had library cards. b. Find a 99% confidence interval estimate of the percentage of adults who had library cards 6. Trust in Wall Street: In a Harris Poll, 2537 randomly selected adults were asked whether their trust in Wall Street has declined over the past few years, and 57% of them said that it had. a. Find the point estimate of the percentage of adults who have less trust in Wall Street. b. Find a 95% confidence interval estimate of the percentage of adults who have less trust in Wall Street. c. Can we safely conclude that the majority of adults who have less trust in Wall Street? Explain.