4.47 Two methods, A and B, are available for teaching a certain industrial skill. The failure rate...
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4.47 Two methods, A and B, are available for teaching a certain industrial skill. The failure rate is 20%
for A and 10% for B. However, B is more expensive and hence is used only 30% of the time. (A is used the other 70%.) A worker is taught the skill by one of the methods but fails to learn it correctly. What is the probability that he was taught by method A?
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Related Book For 
Probability And Statistics For Engineers
ISBN: 9781133006909
5th Edition
Authors: Richard L Scheaffer, Madhuri Mulekar, James T McClave, Cecie Starr
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