Answer Happy

Suppose that the treatment described in the previous problem was successful for 21 out of 100 people selected. Construct a 95% confidence interval for the population proportion p, and explain how this leads to the same decision you arrived at in part c (the significance test on testing whether p different than 15%). Blank #1: Report the bounds of your confidence interval as lower,upper. Report the bounds with four decimal places. Blank #2: The confidence confirms the significance test because (1) 0.15 is within the bounds, (2) 0.21 is within the bounds, (3) 0.15 is outside the bounds, (4) 0.21 is outside the bounds. Enter your answer as 1, 2, 3 or 4.