In a simple random sample of 1600 young people. 85% had earned a high school diploma. Complete parts a through d below. a. What is the standard error for this estimate of the percentage of all young people who earned a high school diploma? 0.0089 (Round to four decimal places as needed.) b. Find the margin of error, using a 95% condence level, for estimating the percentage of all young people who earned a high school diploma. |:|% (Round to one decimal place as needed.)