Mathematics, 03.09.2021 04:00, Taylorkevon35
Chantix is a prescription pill used to help smokers who want to quit. However, some doctors are concerned about the potential negative side effects of the drug including nausea, abnormal dreams, insomnia, and headache. A study of the safety and effectiveness of Chantix included 1,493 smokers wanting to quit who volunteered to participate in a clinical trial of the drug. Of the 751 smokers randomly assigned to take Chantix over a 24-week period, 28 experienced serious side effects. Of the 742 smokers randomly assigned to take a placebo over the same period, 16 experienced serious side effects. Researchers were interested in whether the data provide convincing statistical evidence that taking Chantix would increase the risk of serious side effects among all smokers similar to the volunteers.
1. Does this study represent an experiment or observational study?
2. Define the explanatory and response variables.
3. What is the unknown parameter of interest in this study?
Answers: 2
Mathematics, 21.06.2019 16:30, reyesortiz6955
Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.
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Mathematics, 21.06.2019 21:00, babyboo6745
Bo is buying a board game that usually costs bb dollars. the game is on sale, and the price has been reduced by 18\%18%. what could you find the answer?
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Chantix is a prescription pill used to help smokers who want to quit. However, some doctors are conc...