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 emailed to 2349 subjects randomly selected from an online group involved with ears. 929 surveys were returned. Construct a 99% condence interval for the proportion of returned surveys. @ Click the icon to view a table of z scores. 3) Find the best point estimate ofthe population proportion p. (Round to three decimal places as needed.)