SOLUTION: In a British study around 1950, a group of 649 men with lung cancer were surveryed. A control group of the same size was established from a set of men who did not have lung cancer.

Question 195815: In a British study around 1950, a group of 649 men with lung cancer were surveryed. A control group of the same size was established from a set of men who did not have lung cancer. The groups were matched according to ethnicity, age, and socieconomic status. The statistics from the survey follow.
Smokers: 647 lung cancer cases, 622 control, total 1269
non smokers: lung cancer cases 2, control 27, total 29
A.) what is the proportion of smiling in the goupd that has lung cancer in the study?
B.) what is the proportion of smoking in the control group?
C.) if a person is chosen at random from each of the two groups(smokers and non smokers) what is the probability that each person chosen has cancer?
D.) do you think this data presents a strong associatin between lung cancer and smoking?
e.)Do you think that this evidence is conclusive that smoking causes lung cancer?(problem taken from curriculum framework).
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
In a British study around 1950, a group of 649 men with lung cancer were surveryed. A control group of the same size was established from a set of men who did not have lung cancer. The groups were matched according to ethnicity, age, and socieconomic status. The statistics from the survey follow.
Smokers: 647 lung cancer cases, 622 control, total 1269
non smokers: lung cancer cases 2, control 27, total 29
A.) what is the proportion of smoking in the goup that has lung cancer in the study?
647/1269
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B.) what is the proportion of smoking in the control group?
622/649
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C.) if a person is chosen at random from each of the two groups(smokers and non smokers) what is the probability that each person chosen has cancer?
647/1269 + 2/29 = 0.5788
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D.) do you think this data presents a strong associatin between lung cancer and smoking?
Maybe
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Cheers,
Stan H.
e.)Do you think that this evidence is conclusive that smoking causes lung cancer?
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