A random sample of 83 investment portfolios managed by Kendra showed that 62 of them met the targeted annual percent growth. A random sample of 112 portfolios managed by Lisa showed that 87 mat the targeted annual percent growth.
Please show work and formulas. I have p1 = 62/83 for kendra& p2 87/112 for Lisa
1. Find a 99% confidence interval for the difference in the proportion p1 - p2 of the portfolios meeting target goals managed by Kendra compared with those managed by Lisa.