Solution: Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at allergy institute did a study to see the effects
Question: Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at allergy institute did a study to see the effects of washing the oil off within 5 minutes of exposure. A random sample of 1000 people with known allergies to poison ivy plant was rubbed a patch of skin. For 500 subjects, the oil was washed off after 5 minutes. The results are summarized in the following table.
Use the following notations for the various events
W=washing off oils in 5 minutes
A= washing off oils after 5 minutes
N=no reaction
M=mild reaction
S=strong reaction
- P(N), P(M), P(S)
- P(N|W), P(S|W)
- P(N|A), P(S|A)
- P(N, and W), P(M and W)
- P(N or M), are the events N=no reaction and M=mild reaction, mutually exclusive? Explain
- are the events N=no reaction and W=washing oil off within 5 minutes independent? Explain
Deliverable: Word Document 
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