Smoker Non-smoker Total Overall Diabetic A 20,171 45,844 Not Diabetic 374, 327 B

Question

Smoker

Non-smoker

Total Overall

Diabetic

A

20,171

45,844

Not Diabetic

374, 327

B

1,154,156

a) fill in A & B above.

b)What is the overall probability of having Diabetes in this population?

c)Among those who smoke, what is the probability of having
diabetes?

d)Among those who do not smoke, what is the probability of having
diabetes?

e)Looking at your answers to part c and part d above, does smoking appear to be related to diabetes? What impact, if any, does smoking appear to have?

Smoker

Non-smoker

Total Overall

Diabetic

A

20,171

45,844

Not Diabetic

374, 327

B

1,154,156

Explanation / Answer

a)

  overall probability of having Diabetes in this population =45844/1200000 =0.0382

b) probability of having diabetes given smokes =25673/400000 =0.0642

c)probability of having diabetes not smokes =20171/800000 =0.0252

d)

ere as we can see diabetes is more prevelent in group of people who smokes'; therefore smoking appear to cause diabetes.

smoker non smoker total diabetic 25673 20171 45844 not diabetic 374327 779829 1154156 total 400000 800000 1200000

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