Use the sample data and condence level given below to complete parts (a) through (d). Adrug is used to help prevent blood clots in certain patients. In clinical trials, among 4686 patients treated with the drug, 100 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. .021 (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.) Use the sample data and condence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2342 subjects randomly selected from an online group involved with ears. 1000 surveys were returned. Construct a 95% condence interval for the proportion of returned surveys. @ Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. .427 (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.) In a science fair project, Emily conducted an experiment in which she tested professional touch therapists to see if they could sense her energy eld. She flipped a coin to select either her right hand or her left hand, and then she asked the therapists to identify the selected hand by placing their hand just under Emily's hand without seeing it and without touching it. Among 278 trials, the touch therapists were correct 132 times. Complete parts (a) through (d). a. Given that Emily used a coin toss to select either her right hand or her left hand, what proportion of correct responses would be expected if the touch therapists made random guesses? .5 (Type an integer or a decimal. Do not round.) b. Using Emily's sample results, what is the best point estimate of the therapists' success rate? (Round to three decimal places as needed}