In a study of cell phone use and brain hemispheric dominance, an Internet survey was e-mailed to 2470 subjects randomly selected from an online group involved with ears. 1029 surveys were returned. Construct a 95​% confidence interval for the proportion of returned surveys. a) Find the best point estimate of the population proportion p. b)Identify the value of the margin of error E. c)Identify the value of the margin of error E. ​(Round to three decimal places as​ needed.) Thank you so much

In a survey of 3213 adults aged 57 through 85​ years, it was found that 83.9​% of them used at least one prescription medication. Complete parts​ (a) through​ (c) below. a. how many of the 3213 subjects used at least one prescription medication?  b. construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. what do the results tell us about the proportion of college students who use at least one prescription medication?

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 2543 subjects randomly selected from an online group involved with ears. 1055 surveys were returned. Construct a 99% confidence 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. (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. O

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 2610 subjects randomly selected from an online group involved with ears. 1052 surveys were returned. Construct a 95% confidence 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. (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.