According to a Leger Marketing survey of 800 Canadians under the age of 40, 600 respondents believe their future prospects are better than their parents' generation. Determine the lower limit of a 99% confidence interval and the margin of error for the proportion p of Canadians under 40 who feel this way. - 72% and 3.9% - 71.06% and 3.9 - 72% and 3.0 - 71.06% and 3.0 - 72.48% and 3.9