Mathematics, 18.12.2021 14:00 kendrabrown41
ABSTRACT: In a classic study in the investigation of the health effects of cigarette smoking, volunteers working in 1,121 counties in 25 states in the U. S. recruited 447,196 men, age 33-92 and had them complete a questionnaire about their smoking habit. Five years later, 39,178 of these men had died, and it was concluded that life expectancy was diminished by cigarette smoking. Which of the following best describes the design of this study?
A. Case-control study
B. Prospective cohort study
C. Ecologic study
D. Cross-sectional study
Answers: 3
Mathematics, 21.06.2019 15:40
Which of the following represents the zeros of f(x) = 6x3 − 31x2 + 4x + 5? −5, one third , one half 5, − one third , one half 5, one third , − one half 5, one third , one half
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Mathematics, 21.06.2019 20:00
Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.
Answers: 1
Mathematics, 22.06.2019 00:00
Evan went to the park and saw for animals each animal was either a duck or dog if he saw a total of 14 legs how many of each animal did he see
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Mathematics, 22.06.2019 00:30
Afurniture store is having a weekend sale and is offering a 20% discount on patio chairs and tables the sales tax on furniture is 6.25%
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ABSTRACT: In a classic study in the investigation of the health effects of cigarette smoking, volunt...
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