In a Washington Post/Kaiser Family Foundation Poll conducted from January through March 2015, 20% of women (ages 17-26) who attended college during the past 4 years say they were sexually assaulted. The poll surveyed 514 randomly selected females.
What is the 90% confidence interval for the proportion of women (ages 17-26)
who attended college during the past 4 years and say they were sexually assaulted?
a.(0.182, 0.218)
b.(0.165, 0.235)
c.(0.155, 0.245)
d.(0.171, 0.229).