Activity 1.2. Compute the margin of error and length of confidence interval given the following data:

1. Confidence Level =90%, o = 3, n = 30 2. Confidence Level =98%, o = 15, n = 55 3. Confidence Level =95%, s = 9, n = 80 Activity 1.3. Compute the interval estimate given the following data: 3. Confidence Level =99%, x = 28, o = 12, n = 60