2. In a survey of 971 adults in the United States, it was found that 5.1% of them are vegetarian or vegan. a) Construct a 95% confidence interval estimate of the percentage of people in the United States who are vegetarians or vegan. Round the percentages to three decimal places. b) Construct a 86% confidence interval estimate of the percentage of people in the United States who are vegetarians or vegan. Round the percentages to three decimal places