Question
The following table shows the results of a study on smoking and three illnesses. We are interested in determining if the proportions smokers in the
The following table shows the results of a study on smoking and three illnesses.
We are interested in
determining if the proportions smokers in the three categories are different from each other.
Emphysema
Heart problem
Cancer
Total
Smoker
150
70
100
320
Non-smoker
50
130
500
680
Total
200
200
600
1000
a.
Provide the null and the alternative hypotheses.
b.
Determine the expected frequencies.
c.
Compute the sample proportions.
d.
Compute the critical values (CV
ij
).
e.
Give your conclusions on pairwise comparisons by providing numerical reasoning
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Practical Linear Algebra A Geometry Toolbox
Authors: Gerald Farin, Dianne Hansford
4th Edition
1003051219, 9781003051213
