Use the sample data and confidence 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 2649 subjects randomly selected from an online group involved with ears. 956 surveys were returned. Construct a 95% confidence interval for the proportion of returned surveys. E Click the icon to view a table of z scores. a) Find the best point estimate of the population proportion p. (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 confidence interval. (Round to three decimal places as needed.) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. O A. 95% of sample proportions will fall between the lower bound and the upper bound. O B. One has 95% confidence that the sample proportion is equal to the population proportion. OC. There is a 95% chance that the true value of the population proportion will fall between the lower bound and the upper bound. O D. One has 95% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion.