Mathematics, 03.06.2021 09:20 trentonthreats5073
Suppose a group of 700 smokers (who all wanted to give up smoking) were randomly assigned to receive an antidepressant drug or a placebo for six weeks. Of the 431 patients who received the antidepressant drug, 29 were not smoking one year later. Of the 269 patients who received the placebo, 78 were not smoking one year later. Given the null hypothesis H0:(pdrug−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 α=0.04,
(a) The test statistic is
(b) The P-value is
Answers: 1
Mathematics, 21.06.2019 19:30
Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. how many hours after the truck's departure will the two meet?
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Mathematics, 21.06.2019 21:40
The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.
Answers: 1
Suppose a group of 700 smokers (who all wanted to give up smoking) were randomly assigned to receive...
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