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Use the sample data and condence 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 4562 patients treated with the drug, 179 developed the adverse reaction of nausea. Construct a 90% confidence interval for the proportion of adverse reactions. a) Find the best point estimate of the population proportion p. D (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 condence interval. I