In problems 5-8, you are given a sample size "n", a population standard deviation "o", and a Confidence Interval "CI". Find the margin of error "E" for each confidence interval. Hint: find a z-score, then solve for E using E = Za () . Round your answer to the nearest hundredth. 5. n =36, o = 10, CI = 95% 6. n = 144, o =12, CI = 95% 7. n = 80, o =5, CI =99% 8. n = 68, 6=8, CI =90%