5 statistical inference we infer something about the

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Unformatted text preview: cancer? ● ● ● ● ● SES but simple models are still useful. 3 Why should we be careful not to say it caused the cancer? 4 • Maybe those indoor tanners with cancer also spent a lot of time in the outdoor sun. • Maybe it’s other “bad” behaviors that indoor tanners have that are causing the skin cancer (lotion tanning products, radical diets, etc.). ———————————————————– Experiment Q: Does indoor tanning cause skin cancer? Randomly assign people to either... 1) Indoor tanning group 2) No indoor tanning group If outdoor tanning increases the incidence of skin cancer, some of the people in each of groups 1 & 2 above will do outdoor tanning, and the outdoor effect will “wash-out...
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This note was uploaded on 06/12/2013 for the course MATHEMATIC MAT7870 taught by Professor Sun during the Winter '13 term at Wayne State University.

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