Answer:
Evidence of an increased risk of lung cancer associated with cigarette smoking was sought by Doll and Hill. In one study, 649 lung cancer cases were matched by age, and gender to 649 controls; 647 of the cases and 622 of the control had a history of smoking cigarettes.a.Name the type of study. Case control studyb.Create the appropriate 2X2 table for the study. (2 points)Lung CancerControlsSmokers647622Nonsmokers227Total649649c.Calculate the appropriate measure of association for the study. (4 points)The odds ratio: Cases = 647 / 2 = 323.5The odds ratio: Control = 622 / 27 = 23.03The odds ratio = 23.03 / 323.5 = 14.04 d.Interpret the results. (2 points)Smokers are 14 times more likely to develop lung cancer than non-smokers.
Step-by-step explanation:
Answer:
96$
Step-by-step explanation:
P = $8,000
R = 12%
T = 1yr
I = PRT/100
I = (800×12×1)/100
I = 96$
7/1 x 3/14 = 21/14 = 3/2 = 1 1/2
The answer is 1 1/12 or 1.5, but I recommend the fraction way since the problem was in fractions!
Answer:
(1, 3), (2, 4).
Step-by-step explanation:
y= x² - 4x + 6
y = x + 2
Substitute for y in the first equation:
x + 2 = x²- 4x + 6
x^2 - 5x + 4 = 0
(x - 1)(x - 4) = 0
x = 1, 4
When x = 1 , y = 1 + 2 = 3.
When x = 4, y = 4 + 2 = 6.
9514 1404 393
Answer:
D. 105 ft²
Step-by-step explanation:
The total surface area is the sum of the base area and the triangular face areas.
Area of base:
A = s²
A = (7 ft)² = 49 ft²
Area of 4 triangles:
A = 4(1/2)bh
A = 2(7 ft)(4 ft) = 56 ft²
Total surface area:
base area + triangle area = 49 ft² +56 ft² = 105 ft²
