A​ country's education department reported that in 2015​, 61.3​% of students enrolled in college or a trade school within 12 months of graduating high school. In ​2017, a random sample of 160 individuals who graduated from high school 12 months prior was selected. From this​ sample, 96 students were found to be enrolled in college or a trade school. Complete parts a through b. A. Construct a 95​% confidence interval to estimate the actual proportion of students enrolled in college or a trade school within 12 months of graduating from high school in 2017.
The confidence interval has a lower limit of
and an upper limit of
.
B. Find margin of error .