Use the sample data and confidence level given below to complete parts a through d A drug is used to help prevent blood clots in certain patients In clinical trials among 4376 patients treated with the drug 139 developed the adverse reaction of nausea Construct a 95 confidence interval for the proportion of adverse reactions a Find the best point estimate of the population proportion p Round to three decimal places as needed b Identify the value of the margin of error E E 0 Round to three decimal places as needed c Construct the confidence interval p Round to three decimal places as needed