Suppose a group of 900 smokers (who all wanted to give up smoking) were randomly assigned to recieve an antidepressant drug or a placebo for six weeks. Of the 162 patients who recieved the antidepressant drug, 37 were not smoking one year later. Of the 738 patients who recieved the placebo, 145 were not smoking one year later. Given the null hypothesis Ho: (p1 - p2) = 0 and the alternative hypothesis Ha: (p1 - p2) =/0 , conduct a test to see if taking an antidepressant drug can help smokers stop smoking. Use (alpha symbol)= 0.08