evious Problem Problem List Next Problem points) Suppose a group of 1000 smokers (who all wanted to give up smoking) were randomly assigned to receive an antidepressant drug or placebo for six weeks. Of the 316 patients who received the antidepressant drug, 91 were not smoking one year later. Of the 684 patients who ceived the placebo, 15 were not smoking one year later. Given the null hypothesis Ho : (Pdrug - Pplacebo ) = 0 and the alternative hypothesis Ha : (Pdrug - Pplacebo ) # 0, conduct a test to be if aking an antidepressant drug can help smokers stop smoking. Use a = 0.05. The test statistic is The p-value is The final conclusion is A. There is not sufficient evidence to determine whether the antidepressant drug had an effect on changing smoking habits after one year. O B. There seems to be evidence that the patients taking the antidepressant drug have a different success rate of not smoking after one year than the placebo group. Note: You can earn partial credit on this