Use the sample data and confidence level given below to complete parts(a) through(d).

In a study of cell phone use and brain hemisphericdominance, an Internet survey wase-mailed to 2352 subjects randomly selected from an online group involved with ears. 1043 surveys were returned. Construct a 99% confidence interval for the proportion of returned surveys.

a) Find the best point estimate of the population proportion p.

(Round to three decimal places asneeded.)