Question

A survey of 180 students is selected randomly on a large university campus. They are asked if they use a laptop in class to take notes. The result of the survey is that 90 of the 180 students responded "yes". An approximate 98% confidence interval is (0.413, 0.587). Complete parts a through C. a) How would the confidence interval change if the confidence level has been 95% instead of 98% b) How would confidence interval change if the sample size had been 270 instead of 180? - assume same sample proportion. C) How would the confidence interval change if the confidence level had been 99% instead of 98%? * Also need to know if the interval becomes wider or narrower.

Answer 1