I need (b) and I need the confidence interval for population proportion (c)

Use the samplo thta and confidence level given below to complete parts fa) through (d). In a stiady of coll phone use and beain bemispheric dominance, an insornet survey was e-mailed to 2632 subjects randomly selected from an onine group involved with ears. 1033 surveys were returned. Construct a 95% confidence interval for the proportion of teturned surveys. Click the ioon to view a table of 2 scores: a) Find the best point estimate of tha population proportion p. 0.392 (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.)