14. Two methods, A and B, are used to teach a certain technique. The failure rate for A is 20% and for B it is 10%. Because B is a much more cxpensive technique it is only used 30% of the time. A person is trained with one of the methods and fails to learn the technique. What is the probability that she was trained with method A? a. 0.80 b. 0.82 c. 0.84 d. 0.86 с. 0.88

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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14. Two methods, A and B, are used to teach a certain technique. The failure rate for A is
20% and for B it is 10%. Because B is a much more expensive technique it is only used
30% of the time. A person is trained with one of the methods and fails to learn the
technique. What is the probability that she was trained with method A?
a. 0.80
b. 0.82
c. 0.84
d. 0.86
с.
0.88
Transcribed Image Text:14. Two methods, A and B, are used to teach a certain technique. The failure rate for A is 20% and for B it is 10%. Because B is a much more expensive technique it is only used 30% of the time. A person is trained with one of the methods and fails to learn the technique. What is the probability that she was trained with method A? a. 0.80 b. 0.82 c. 0.84 d. 0.86 с. 0.88
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