=Quiz: Quiz 6 - 8.4, 9.1-9.2... Question 3 of 8 This quiz: 10 point(s) possible This question: 2 point(s) possible Submit quiz A study was conducted on the efficacy and safety of varenicline for smoking cessation in people living with HIV. The study was a randomized, double-blind, placebo-controlled trial. Of the 127 subjects treated with varenicline, 18 abstained from smoking for the entire 48-week study period. Of the 128 subjects assigned to the placebo group, 7 abstained from smoking for the entire study period. Complete parts (a) and (b). The sample percentage of subjects treated with varenicline who abstained from smoking for the entire 48-week study period is %. The sample percentage of subjects in the placebo group who abstained from smoking for the entire 48-week study period is% (Round to two decimal places as needed.) b. Determine whether varenicline is effective in reducing smoking among HIV patients. Note that this means we should test if the proportion of the varenicline group who abstained from smoking for the entire study period is significantly greater than that of the placebo group. Use a significance level of 0.05. Consider the first sample to be the varenicline group and the second sample to be the placebo group. What are the null and alternative hypotheses for the hypothesis test? O A. Ho: P1 = P2 O B. Ho: P1 = P2 O C. Ho: P1 # P2 Ha: P1 > P2 Ha: P1 # P2 Ha: P1 = P2 O D. Ho: P1 > P2 O E. Ho: P1 = P2 OF. HO: P1