Let p1 represent the population proportion of the people in group 1 who are in favor of new packaging and Let p2 represent the population proportion of the people in group 2 who are in favor of new packaging, where sample proportion 1 = .2, sample proportion 2 = .25, n1= 100, n2 = 400. Construct a 99 percent confidence interval for the difference between the proportions of Group | and Group 2 (use p1p2), and please answer the following questions: 1). (3) Find the value of reliability factor 2). (4) Find the value of standard error of the difference between the two population proportion 3). (3) Make a conclusion