A control group of 120 randomly selected volunteers are assi

A control group of 120 randomly selected volunteers are assigned to use a placebo patch containing no nicotine. Assuming there is no bias, what can you conclude given that the 95% confidence interval for the percentage of smokers who quit within 8 weeks using the placebo patch is (13%, 27%)? Explain.

We can say that we are 95% confident that effectiveness of placebo patch is within (13% to 27%)