professional football said that the Green Bay packers were their favorite team. Suppose we want to estimate such a percent from the nation. i) Describe the parameter in words. Is it known? if) Build an 80% confidence interval for the pop: proportion. (Look for proper critical z-value in the book). Use z = 1.28 ifi) Build a 90% confidence interval for the pop: proportion who support GB packers. Compare the confidence intervals from above and explain how the length of confidence levels change as the level of confidence goes up