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 376 patients who received the antidepressant drug, 106 were not smoking one year later. Of the 424 patients who received the placebo, 163 were not smoking one year later. Given the null hypothesis Ho : (Pdrue - Pplacebo) = 0 and the alternative hypothesis Ha : (Pdrug - Pplacebo) # 0, conduct a test to see if taking an antidepressant drug can help smokers stop smoking. Use a = 0.03, (a) The test statistic is (b) The P-value is (c) The final conclusion is OA. 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. B. There is not sufficient evidence to determine whether the antidepressant drug had an effect on changing smoking habits after one year.

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 376 patients who received the antidepressant drug, 106 were not smoking one year later. Of the 424 patients who received the placebo, 163 were not smoking one year later. Given the null hypothesis Ho : (Pdrue - Pplacebo) = 0 and the alternative hypothesis Ha : (Pdrug - Pplacebo) # 0, conduct a test to see if taking an antidepressant drug can help smokers stop smoking. Use a = 0.03, (a) The test statistic is (b) The P-value is (c) The final conclusion is OA. 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. B. There is not sufficient evidence to determine whether the antidepressant drug had an effect on changing smoking habits after one year.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Several years ago, the Arcadia school system was criticized because the average Arcadia High School graduate could read at only the ninth-grade level. After this report was made, a special reading program was established to upgrade skills. The AHS principal wants to know if the reading program worked. If it has, he will request that an accreditation team visit the school. If the program has not improved the reading level to at least 10.0 (sophomore level), the administrator would like to avoid the embarrassment of a poor review. To determine the average reading level of the senior class, we select ten seniors at random. We assume that reading scores are normally distributed. The reading scores for the ten seniors are shown in Table 1. Table 1: Reading Scores for Sample High School Seniors Student Reading Score 1 13.4 2 12.1 3 11.4 4 10.6 5 10.3 6 10.2 7 9.8 8 9.7 9 9.4 10 8.6 Calculate the sample mean…
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