a. Find the best point estimate of the population proportion. b. Identify the value of the margin of error E. c. Construct the confidence interval. d. Write a statement that correctly interprets the confidence interval.a. Find the best point estimate of the population proportion. b. Identify the value of the margin of error E. c. Construct the confidence interval. d. Write a statement that correctly interprets the confidence interval.In a clinical trial of a certain drug, 26 subjects experience headaches among the 229 subjects treated with the drug. Construct a 99% (Wald) confidence interval estimate for the proportion of treated subjects who experience headaches, completing parts (a) through (d) below. a. Find the best point estimate of the population proportion. 0.114 (Type an integer or a decimal rounded to three decimal places as needed.) b. Identify the value of the margin of error E. (Type an integer or a decimal rounded to three decimal places as needed.)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 4385 patients treated with the drug, 168 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.)