Heart failures are due to either natural occurrences (87%) or outside factors (13%). Outside factors are related to induced substances (73%) or foreign objects (27%). Natural occurrences are caused by arterial blockage (56%), disease (27%), and infection (e.g. staph infection) (17%). (a) Determine the probability that a failure is due to induced substance. (b) Determine the probability that a failure is due to disease or infection.
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Disease is (87%*27%)=23.49% or 0.2349
Infection is (87%*17%)=14.79% or 0.1479
Total chance is 23.49+14.79=38.28% or 0.3828
To double check total chance is (87%*(17+27%))=38.28% or 0.3828, which is the same as the first answer, so it is correct.
Infection is (87%*17%)=14.79% or 0.1479
Total chance is 23.49+14.79=38.28% or 0.3828
To double check total chance is (87%*(17+27%))=38.28% or 0.3828, which is the same as the first answer, so it is correct.
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