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Antidepressant drug can help smokers

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Reference no: EM131724821

Suppose a group of 800 smokers (who all wanted to give up smoking) were randomly assigned to receive an antidepressant drug or a placebo for six weeks. Of the 299 patients who received the antidepressant drug, 145 were not smoking one year later. Of the 501 patients who received the placebo, 53 were not smoking one year later. Given the null hypothesis H0:(pdrug-placebo)=0 and the alternative hypothesis H a:(pdrug-pplacebo)≠0H, conduct a test to see if taking an antidepressant drug can help smokers stop smoking. Use α=0.04

(a) The test statistic is -

(b) The P-value is -

Reference no: EM131724821

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