Question: In a study of the effects of this ban, subjects who smoke were randomly selected from two different populations. Among 843 smoking employees of hospitals with the smoking ban, 56 quit smoking one year after the ban. Among 703 smoking employees from work place without a smoking ban, 27 quit smoking a year after the ban. Is there a significant difference between the two proportions at a .05 significance level? Is there a significant difference between the two proportions at a .01 significance level? Does it appear that the ban had an effect on the smoking quit rate?