We want to compute a 95% condence interval to estimate the difference in proportion of treatment group participants who can complete a task compared to the proportion of control group participants who can complete the task. In other words, we are going to estimate pt - Po. where p, is the proportion of successes in the treatment group and pc is the proportion of successes in the control group. Use the following values to construct this confidence interval: P, = 0.600 Pc = 0.500 ne = 100 nc = 100 SE = 0.070 z' = 1.960