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 4845 patients treated with the drug, 151 developed the adverse reaction of nausea. Construct a 99% 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 = (Round to three decimal places as needed.) c) Construct the confidence interval.