should be obtained if she wishes the estimate to be within 0.02 with 90% confidence if (a) she uses a previous estimate of 0.32? adults who have high-speed Internet access. What size sample (b) she does not use any prior estimates? Click the icon to view the table of critical values. (a) n = (Round up to the nearest integer.) (b) n = (Round up to the nearest integer.) Table of critical values Level of Confidence, Area in Each Tail, (1 - a)-100% 72 90% 0.05 95% 0.025 Critical Value, 1.645 1.96 99% 0.005 2.575