Statistics: Confidence Intervals, margin of error for given values of c, s, and n.

Find the margin of error for the given values of c, s, and n.

1. C=0.95, s= 5, n = 16
2. c= 0.90, s = 2.4, n= 12
3. c=0.98, x= 12.5, s= 2.0, n=6