Only problem e and f

Researchers comparing the effectiveness of two pain medications randomly selected a group of patients who had been complaining of a certain kind of joint pain. They randomly divided these people into two groups, then administered the pain killers. Of the 119 people in the group who received medication A, 82 said it was effective. Of the 116 in the other group, 63 said pain reliever B was effective. Complete parts a through f. O B. Yes, they overlap. This indicates that there is no difference in the effectiveness of the medications. C. Yes, they overlap. This might indicate no difference in the effectiveness of the medications, although this is not a proper test. D. No, they do not overlap. This might indicate that there is a difference in the effectiveness of the medications, although this is not a proper test. d) Find a 95% confidence interval for the difference in the proportions of people who may find these medications effective, Interpret your interval. Choose the correct answer below, and, if necessary, fill in the answer boxes to complete your choice. O A. We are 95% confident that the proportion of patients who will find B effective is % to % higher than the proportion who will find A effective. (Round to one decimal place as needed.) O B. We are 95% confident that the proportion of patients who will find A effective is % to % higher than the proportion who will find B effective. (Round to one decimal place as needed.) O C. These data do not show evidence of a difference in the effectiveness of medications A and B. e) Does this interval contain zero? What does that mean? A. No, it does not contain zero. That means that there is a difference in the effectiveness of the medications. OB. Yes, it contains zero. That means that there is no difference in the effectiveness of the medications. C. Yes, it contains zero. No conclusion can be made based on the confidence interval. O D. No, it does not contain zero. That means that there is no difference in the effectiveness of the medications, although it is too close to zero to be sure. () Why do the results in parts c and e seem contradictory? If we want to compare the effectiveness of these two pain relievers, which is the correct approach? OA. The results taken together indicate that there is a difference, but the difference is not significant. O B. The results taken together indicate that 5% of the time there is no difference in their effectiveness and 95% of the time A is more effective then B. OC. To estimate the variability in the difference of proportions, the two one-sample intervals must be compared. The first method is the correct approach. O D. To find the variability in the difference of proportions, add variances. The two one-sample intervals do not. The two-sample method is the correct approach. Click to select your answer. MacBook Air