1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
chubhunter [2.5K]
3 years ago
11

A important study in the history of case-control methods was completed in 1950 by Doll & Hill. This study found that 647 of

the 649 lung cancer cases were smokers. In contrast, 622 of 649 controls smoked.
Mathematics
1 answer:
Sladkaya [172]3 years ago
3 0

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:

You might be interested in
What adds to give you 1, but multiplies to give you -90?
ella [17]
I would say -9 and 10
4 0
3 years ago
15 points and crown <br> solve by factoring (x+6)(2x-5)=0<br> I am confused
Reika [66]
Remember, in order for this equation to be true either one of the polynomials has to equal 0
So:

-> x+6 = 0

x=-6


-> 2x-5 = 0

2x= 5

x= 5/2


So the answer is x=-6 and x= 5/2.


Hope this helps!
7 0
3 years ago
A cylinder has a radius of 4 inches and a high of 10.5 inches what is the approximate volume of the cylinder
olga55 [171]

Answer:

V ≈ 527.79

Step-by-step explanation:

Formula is V= πr2h

therefore

V = π * 4 * 2 * 10.5

V = π * 8 * 10.5

V ≈ 527.79

5 0
3 years ago
sasha needs an average of 30 points to move to the next level in her competion . her scores in the first three events are 28, 35
salantis [7]
Sarah will need 27pts her lowest score
3 0
3 years ago
Select two of the following <br> Need help quick
Brilliant_brown [7]

Answer:

D and C

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • sandy has 16 roses 8 daisies and 32 tulips she wants to arrange all the flaowers in bouquets each bouquet has the same number of
    12·2 answers
  • What is the angle measure of angle b?<br> b<br> 67°<br> A) 113°<br> C) 157°<br> B) 23°<br> D) 67°
    15·2 answers
  • HELP ME PLZZ asap I really need it
    8·1 answer
  • A plane intersects both nappes of a double-napped cone but does not go through the vertex of the cone. What conic section is for
    13·1 answer
  • Is 23in bigger than 2ft
    8·2 answers
  • Ryan rides his bike for 30 minutes and travels a distance of 4 miles. How fast was Joe traveling?
    8·2 answers
  • a pencil cells at 18 Ghana cedis in an eraser class at 12 Ghana cedis how much will you pay if you buy three pencils and for era
    12·1 answer
  • Solve for x in the diagram below.<br> x<br> 2x<br> (x+10)
    11·2 answers
  • 35 Leticia has two bouquets of flowers. Each bouquet contains 13 daisies,
    12·2 answers
  • A plant 3 in. tall grows an average of 0.5 in. each month. Which equation models the flowers height h after x months?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!